X-Men (TV series)
||This article consists almost entirely of a plot summary. It should be expanded to provide more balanced coverage that includes real-world context. (December 2013)|
|Created by||Stan Lee
|Developed by||Saban Entertainment|
|Voices of||Cedric Smith
Cathal J. Dodd
|Country of origin||United States
|No. of seasons||5|
|No. of episodes||76 (List of episodes)|
|Running time||22 minutes|
|Production company(s)||Marvel Entertainment Group
Saban Entertainment, Inc.
Marvel Studios (1997)
|Original channel||FOX (Fox Kids)|
|Original run||October 31, 1992 – September 20, 1997|
|Preceded by||X-Men: Pryde of the X-Men|
|Followed by||X-Men: Evolution|
X-Men, also known as X-Men: The Animated Series, is an American-Canadian animated television series which debuted on October 31, 1992, in the United States on the Fox Network as part of its Fox Kids Saturday morning lineup. X-Men was Marvel Comics' second attempt at an animated X-Men TV series after the pilot X-Men: Pryde of the X-Men was not picked up.
- 1 Background
- 2 Episodes
- 3 Alternate versions
- 4 Characters
- 5 Reception and Accolades
- 6 Spin-offs
- 7 References
- 8 External links
In 1991, Margaret Loesch became head of Fox Children's Network. Having championed the Pryde of the X-Men pilot in 1989, she was quick to set up an order for 13 episodes of X-Men. X-Men was originally to premiere over the Labor Day weekend in September; however, due to production delays, it was pushed to the end of October. Moreover, when the animation team AKOM turned in the first episode, it contained hundreds of animation errors, which AKOM refused to fix. Because of time constraints, the episode was aired as is. The second episode was turned in just before deadline, with 50 scenes missing and only a single day reserved for editing. The "Night of the Sentinels" two-part episode originally aired as a "sneak preview".
Because of the production delays and animation errors in these two episodes, Fox threatened to sever AKOM's contracts. When Fox re-aired the pilot in early 1993, the errors were all corrected. The series earned top ratings throughout its first season, and was renewed for a second season of 13 episodes. X-Men stands as the longest-running Marvel Comics-based show, lasting 76 episodes. The second longest, the 1990s Spider-Man animated series, lasted 65 episodes.
After the box office success of the live-action X-Men film in the summer of 2000, Fox began airing reruns of the cartoon on weekday afternoons. At first, only episodes that primarily featured content in the movie were broadcast. Later, the series was aired in proper order, but the series was pulled from the air in early 2001. Soon after, ABC Family and Toon Disney began airing reruns, due to Disney's buyout of all Saban Entertainment programs. Then later X-Men was taken off the air again after when Toon Disney was discontinued and Disney XD took over its place
The show features X-Men similar in look and line-up to the early 1990s X-Men drawn by Jim Lee (more specifically, Cyclops' Blue Team, established in the early issues of the second X-Men comic series), composed of Cyclops, Wolverine, Rogue, Storm, Beast, Gambit, Jubilee, Jean Grey, Professor X, as well as an original character, Morph (an adaptation of previous X-Men member Kevin Sydney). Though they were not part of the team as featured in the animated series, the following X-Men have all guest-starred in at least one episode: Colossus, Nightcrawler, Emma Frost, Forge, Havok, Polaris, Cannonball, Banshee, Northstar, Iceman, Archangel, Longshot, Dazzler, Sunfire, Psylocke, Cable, and Bishop. There are also cameos and guest appearances by other familiar Marvel heroes, such as Feral, Rictor, Deadpool, Punisher, War Machine, Ghost Rider, Mimic, Blink, Doctor Strange, Ms. Marvel, Captain America, Thor, Nick Fury, Quicksilver, Scarlet Witch, G.W. Bridge and Spider-Man.
A number of famous storylines and events from the comics are loosely adapted in the series, such as "The Dark Phoenix Saga", "Days of Future Past", the "Phalanx Covenant", and the "Legacy Virus". The third episode, "Enter Magneto", features a confrontation at a missile base: this is largely based on the X-Men's first battle with Magneto, as told in their 1963 debut The X-Men #1. The season four episodes "Sanctuary, Parts I & II", which involve Magneto creating an orbiting haven for mutants, were influenced by several storylines from the comics, chiefly the first three issues of X-Men (Volume 2) and the "Fatal Attractions" crossover.
Prejudice, intolerance, isolation, and racism were all frequent themes in the animated series, as they were in the comics. Anti-mutant prejudice and discrimination was depicted through minor characters as well as more prominent ones, including Senator Robert Kelly, the Friends of Humanity (whose activities and masks in later episodes echoed white supremacy groups such as the Ku Klux Klan) and robotic Sentinels. On the opposite side of the spectrum, Professor Xavier and Magneto, much like their comic-book counterparts, bear similarities to civil rights leaders Martin Luther King Jr. and Malcolm X, respectively. While Xavier advocates non-violence in the struggle for equality, Magneto takes on a more aggressive 'by any means necessary' stance; the duo's differing views are the source of much discussion throughout the series.
The series also deals with other social issues, including divorce ("Proteus"), Christianity ("Nightcrawler" & "Bloodlines"), the Holocaust ("Enter Magneto," "Deadly Reunions", "Days of Future Past", and "The Phalanx Covenant"), AIDS hysteria ("Time Fugitives"), and even satires of television itself ("Mojovision" and "Longshot").
Comic book storyline adaptations
As previously mentioned, a number of famous storylines and events from the comics are loosely adapted in the series, such as "The Dark Phoenix Saga", "Days of Future Past", the "Phalanx Covenant", and the "Legacy Virus". The third episode, "Enter Magneto", features a confrontation at a missile base: this is largely based on the X-Men's first battle with Magneto, as told in their 1963 debut The X-Men #1. The season four episodes "Sanctuary, Parts I & II", which involve Magneto creating an orbiting haven for mutants, were influenced by several storylines from the comics, chiefly the first three issues of X-Men (Volume 2) and the "Fatal Attractions" crossover:
- An Age of Apocalypse-like time-line is shown in the episode "One Man's Worth". The death of Professor X at the hands of Fitzroy during his college years caused a destructive war between humans and mutants, with Magneto leading the Resistance against the mutant-hunting Avengers. Some of the mutants are shown in their Age of Apocalypse costumes from the comics.
- The Days of Future Past storyline concepts were combined with another alternative future story—that of Bishop and the idea of a traitor within the ranks of the X-Men. Bishop played the role of Kitty Pryde. The future was a dystopia where Sentinels rule, and mutants were put into concentration camps. Only a small group of mutant rebels remained free and unharmed, led by an aged Wolverine. Bishop, a bounty hunter, captures Wolverine, but sides with him when the Sentinels attack him as well. They met Forge, who created a time machine, and sent Bishop back in time to change history by preventing the assassination of Senator Kelly. He identified Gambit as the assassin, but the crime was actually committed by the shape-shifting mutant Mystique, who took the form of Gambit to frame the X-Men. The real Gambit saved Kelly, and Rogue sent Bishop back to the future by destroying the time band that allowed him to stay in the past. However, Bishop returned to a future that was still a dystopia. Bishop would return several times to prevent other villains from changing history in even worse ways, but never managed to prevent the Sentinel takeover. Unlike in the original story, whirlwinds would come to "correct" Bishop's present based on events in the past, whereas the original story followed the parallel universe theory of Reed Richards.
- A variation of the Legacy Virus was used in a brief storyline where it was the creation of Apocalypse, who had created the virus with the aid of Graydon Creed and the Friends of Humanity, infecting innocent people and claiming that mutants were the ones who had caused the plague. In an attempt to stop the plague, Bishop came back from the future to destroy Apocalypse's work before the virus could move on to mutants, but as a result vital antibodies that would allow the mutant race to survive future plagues were never created. Traveling back from even further in the future, Cable was able to come up with a compromise that allowed both Bishop's and his own missions to succeed; although the plague never made the jump to mutants on a large-scale basis, Cable nevertheless ensured that Wolverine would be infected, thus creating the necessary antibodies while not killing any mutants thanks to Wolverine's healing factor.
- As in the comics, the M'Kraan crystal was sought after by D'ken who wanted to harness the power of the crystal to become, in essence, a god. Absorbing the power of the crystal did indeed transform D'ken but also sucked himself, as well as the X-Men, the Starjammers, the Shiar Imperial Guard, and slowly but surely the rest of the universe as well into the crystal. Within the crystal, D'ken seemed capable of almost any feat, from altering his physical form and firing energy blasts, to controlling the matter all around. Eventually, the Phoenix, having apparently mastered the full range of her powers, appeared and rescued the trapped X-Men and Shiar guard while leaving D'ken trapped inside the crystal. The Phoenix then took the Crystal into the heart of the sun, knowing that while it could not be destroyed, it would still be safely hidden within.
- The Morlocks' members are Callisto, Leech, Erg, Masque, Sunder, Plague, Annalee, Ape, Scaleface, Tommy, Tar Baby, Mole, Glowworm, and Caliban. They first appear in "Captive Hearts", where the Morlocks captured Cyclops and Jean Grey. The X-Men led by Storm then came to get Jean and Cyclops back. In the end after a duel between Storm and Callisto, not only did the X-Men get Cyclops and Jean back, Storm also gained leadership of the Morlocks. Several of the Morlocks would have subsequent cameos outside of the sewers (an example being "Sanctuary"). They would have a major role to play in the episode "Out of the Past" and were last seen in "Have Yourself a Morlock Little X-Mas".
- The Phalanx Covenant was adapted into the two-part fifth-season premiere with Beast as the central character. The Phalanx were conceived to be fully alien and not mutant hating humans who were infected with the technology with Cameron Hodge as the antagonist in the two part series. During the two parter, Beast teams up with Warlock, Forge (part of X-Factor), Mr Sinister, Amelia Voght (who was working on Muir Island at the time) and Magneto.
- The entire saga of the Phoenix is retold and adapted in the third season of the X-Men animated series, subdivided into the five-part "Phoenix Saga", in which Jean acquires the power of the Phoenix and the battle for the M'Kraan Crystal occurs, and the "Dark Phoenix Saga", showcasing the battle with the Hellfire Club, the Phoenix Force's transformation into Dark Phoenix, and the battle to decide her fate. These particular episodes are as close as the cartoon came to directly duplicating the comic book storylines — the "Dark Phoenix Saga" is so accurate to the original stories that the episodes have the additional credit, "Based on stories by Chris Claremont". Notably, however, as the Phoenix Force retcon had occurred before the creation of the series, the episodes were made with this change in mind — rather than having Jean develop her powers independently (as was the original intent of the comics), or be replaced by the cosmic Phoenix Force entity (as events were later retconned), the two concepts were merged, into Jean's actual body being possessed by the Phoenix Force, leading to a true struggle between two independent entities. Jean is shown piloting a shuttle, and when her telekenetic shield fails Phoenix enters her body. Rather than destroying an inhabited system — which was the cause for the decision to kill off the character in the comics — the animated story had her destroy a deserted system and only disable the attacking Shi'Ar cruiser. These changes made it possible for aspects of the original ending of Uncanny X-Men #137, in which Jean survives, to be used. Jean does still commit suicide (taking control of the Shi'Ar's laser beam to fire on herself, rather than finding an ancient weapon), but with her death, the Phoenix Force is purified, and then uses its powers to resurrect Jean, drawing on the combined life-force of the assembled X-Men to bring her back to life. Jean retained her original basic powers, whereas in the aborted comic book ending, she would have been lobotomized by the Shi'Ar and lost them entirely.
Locations, equipment and vehicles depicted
- Asteroid M appears in the two-part episode "Sanctuary." In the series, it has been built by Magneto with the goal of having it act as a sanctuary for all mutants, where they might live free from their human oppressors since he has become weary of battling for mutant supremacy. As such, he tells all of the world of his intentions for Asteroid M. He gathers many mutants from Earth (mainly from Genosha) and takes them to their new home in large transports. He has also previously gathered a large number of nuclear warheads to defend his new sanctuary. Soon the governments of the world feel threatened by Magneto's plan. They are intent on destroying Asteroid M, but through the interference of Professor X this is stopped. In his sanctuary, Magneto no longer cares about humanity. However, one of his followers, the Acolyte Fabian Cortez, desires nothing more than to destroy the humans. This eventually causes him to betray Magneto and jettison him towards Earth. Magneto survives however and is forced to destroy Asteroid M when he destroys hundreds of nuclear warheads Cortez has launched at the Earth in order to wipe out humanity.
- Cerebro was heavily featured throughout the series' duration. It was primarily used by Professor Xavier and he was shown to use it in various ways, such as detecting mutants, increasing his powers, and even understanding Shi'ar technology, and so forth. There was no specified room where Cerebro was kept as in the other animated series but instead came out from the ceiling in most notably the War Room where the X-Men held their team meetings. Jean Grey was also noted to use Cerebro frequently and it would amplify her telepathic powers as it did for Professor X. Jean Grey in this animated series did not always join the X-Men on their field missions but rather monitored them telepathically using Cerebro's help. Even the White Queen of the Hellfire Club, Emma Frost, used Cerebro when she telepathically hacked into it to secretly "spy" on Xavier, the X-Men, and to learn more about Jean Grey and her transformation into the Phoenix. It should be noted that the X-Men's Blackbird jet was also equipped with its own Cerebro.
- The Danger Room was often on X-Men like in the episode "Night of the Sentinels". It also appeared on Spider-Man: The Animated Series, when Spider-Man accidentally entered it while fleeing from the X-Men.
- Genosha claims to be a mutant-friendly environment where those possessing the "X-gene" could live peacefully without fear of persecution. However, as soon as mutants travel there, they are captured and fitted with power-negating collars placed around their necks; they are put to work building Sentinels for the Genoshan government, under the direction of Bolivar Trask, Cameron Hodge, Henry Peter Gyrich, and a government official known as "the Leader." With the help of Cable and a flood orchestrated by Storm, the X-Men simultaneously free the mutant slaves and destroy the Sentinels. Genosha continues to enslave mutants employing Sentinels and Magistrates, until they are rescued by Magneto and his Acolytes with the aid of many mutants (examples being Random, Arclight, Tar Baby, Blockbuster, Peepers, the second Shocker, and even Gambit, the Beast and Professor X). All Genoshan mutants leave for Asteroid M. Before long, the country is taken over by Magneto who is ready to declare war on humanity with the Genoshan mutants by his side, following an attack on Professor X during an anti-mutant summit. He never follows through with his plans, though, as he is called to a dying Xavier's side in the series' final episode.
- Muir Island has made appearances in several episodes.
- The Savage Land appeared in some episodes of the X-Men TV series. It served as the location of Mister Sinister's base. A prominent feature about it was a device designed by Sinister that negated the powers of any mutant in the Savage Land save for Sinister's own forces, rendering the X-Men powerless while fighting him (With the exception of Wolverine's claws as they were a 'bonus' of the Weapon X process, although they would thus cause damage to his hands when used) until the machinery was destroyed. Magneto and Professor X spent much of the show's second season trapped in the Savage Land (Xavier's legs having fortunately been restored as a result of the loss of his powers) until Sinister used them as bait to lure the X-Men into a trap in the season finale, Sinister's forces subsequently being defeated when Wolverine escaped capture and teamed up with Ka-Zar to infiltrate the base and defeat Sinister. In "Savage Land, Savage Heart," the X-Men return to the Savage Land to help Ka-Zar and Shanna fight the threat of Garokk.
Spider-Man (1994 TV series) crossover
The X-Men appeared in the episodes "The Mutant Agenda" and "Mutants' Revenge." Cyclops, Wolverine, Rogue, Storm, Beast, Gambit, Jubilee, Jean Grey, and Professor X were featured as the X-Men. In the "Mutant Agenda" episode, Spider-Man's progressing neogenic mutation is making him ill and he seeks the aid of Professor Charles Xavier. In doing so he meets the X-Men but is disappointed to learn that Xavier does not 'cure' mutancy, only helps those born that way to accept and control their abilities. Wolverine in particular took issue with Spider-Man viewing his mutation as a curse. Beast, however, was more sympathetic to the super-hero's plight and attempted an olive branch towards him. This meeting of heroes was soon followed by a plot by Dr. Herbert Landon and the Hobgoblin to destroy mutants everywhere. But Spider-Man and the X-Men work together to defeat them and end their plot. Later Storm appeared in the "Secret Wars" battle on the good side against the evil side.
In the abbreviated form of the Secret Wars storyline, the Beyonder and Madame Web selected Spider-Man to lead a team of heroes (consisting of himself, the Fantastic Four, Captain America, Black Cat, Iron Man and Storm) against the villains Doctor Doom, Doctor Octopus, Lizard, Alistair Smythe, and Red Skull. The goal was allegedly to determine whether good or evil were stronger, but it was revealed after the war to have been carried out to determine which of several alternate Spider-Men was worthy to lead a team to save the universe. One completely written chapter of "Secret Wars" involved the X-Men, but transporting the X-Men cast to L.A. (where production for the Spider-Man animated series was based) from Canada (where the X-Men animated series was based) was too costly in the previous episodes the X-Men appeared in, so the episode was dropped and only Storm was used (as previously mentioned) for the rest of the chapters of Secret Wars due to the fact that Iona Morris (who was the first voice of Storm before being replaced by Alison Sealy-Smith) lives in L.A. Hulk and She-Hulk weren't used in these episodes because the Hulk show was on UPN.
VHS and DVD releases
The original opening sequence featured the X-Men demonstrating their mutant abilities to a now very distinctive instrumental theme (written by Ron Wasserman). This intro is used throughout the first four seasons. A modified version is eventually introduced in season five, episode one ("Phalanx Covenant, Part One"). In this new intro, the beginning of the theme is slightly changed. When UPN began airing repeats on Sunday mornings an alternate credits sequence was used: a high-quality Japanese-animated version of the original opening.
X-Men originally aired on TV Tokyo from 1994 through 1995. For the TV Tokyo dub of the series, the intro was replaced with a new, Japanese-animated sequence as well as a new theme called "Rising" (ライジング), by the band Ambience (アンビエンス). Starting with episode 42, a second new intro was used, featuring the song "Dakishimetai Dare Yori Mo" (抱きしめたい誰よりも…). The end credits sequence was also changed: it featured shots of American X-Men comic books set to the song "Back to You" (バック･トウ･ユー), also by Ambience.
The TV Tokyo dub was directed by Yoshikazu Iwanami and featured scripts rewritten to include a more humorous, self-satirical tone as well as an emphasis on comical adlibbing (a hallmark of Iwanami's dubbing style). Episodes were edited for time so that new segments could be added to the end which promoted the X-Men: Children of the Atom video game from Capcom. The dub actors would pretend to play the game as their characters and make humorous asides and remarks.
Japanese voice actors involved in the TV Tokyo dub include: Kōichi Yamadera (Cyclops), Shinobu Adachi (Jean Grey), Rihoko Yoshida (Storm), Akiko Hiramatsu (Jubilee), Masashi Ebara (Wolverine), Norio Wakamoto (Mr. Sinister), Yūko Kobayashi (Rogue), Yoshito Yasuhara (Gambit), Ayako Shirashi (Mystique), Ryūzaburō Ōtomo (Magneto), Rokurō Naya (Professor X),and Mitsuru Ogata (Morph).
X-Men was dubbed a second time in the early 2000s for broadcast on Toon Disney (Japan). This dub was more faithful to the original English scripts and episodes were not cut for time. The Toon Disney version used the original American intro and end credits rather than the unique ones created for the TV Tokyo version. The Toon Disney dub also featured an entirely new cast from the TV Tokyo version.
Japanese voice actors involved in the Toon Disney dub include: Takashi Nagasako (Cyclops), Jun Sagawa (Jean Grey), Youko Kurata (Storm), Saori Seto (Jubilee), Takeshi Maruyama (Wolverine), Megumi Yamato (Rogue), Shinya Fukumatsu (Gambit), Chie Matsuura (Mystique), Jin Urayama (Magneto), Shouzou Sasaki (Professor X) and Yuichi Ishigami (Morph).
||This article's plot summary may be too long or excessively detailed. (May 2013)|
- Norm Spencer as Cyclops/Scott Summers - Cyclops wears his then current costume designed by Jim Lee. Scott is the established team leader and is in a relationship with Jean Grey from the beginning of the series, acting more or less as his mainstream counterpart would. Scott's father is the space-pirate Corsair. During a battle with the government team X-Factor, Scott has to fight his brother Alex. Neither of the two realize that they are brothers, and their powers have no effect on each other. He is one of the original X-Men members along with Beast, Jean, and Iceman. In the final episode of the show, a dying Charles Xavier tells him, "Scott, were I your father, I would tell you, 'no true a son could ever be.' I am proud." He also guest starred in Spider-Man: The Animated Series in the 1990s in "The Mutant Agenda/Mutant's Revenge", along with the rest of the X-Men, in which Spider-Man seeks Professor X's help in curing his recent mutation crisis.
- Cathal J. Dodd as Wolverine/Logan - Though he never kills his opponents, it has been implied that he would if the other X-Men were not there to hold him back. He dons the yellow and blue costume from the comics. Wolverine is also in love with Jean Grey, Cyclops's girlfriend. This and Cyclops's decision to leave Morph and Beast behind following an attack from the Sentinels leads to Wolverine feeling great resentment for the X-Men leader. Wolverine remembers very little about his past. He used the aliases "Logan" and "John Logan" in the series.
- Lenore Zann as Rogue - Rogue has absorption powers, Ms. Marvel powers, and a copy of Ms. Marvel's psyche trapped inside her own. She is somewhat liberal in her use of her powers, but sometimes the psyches affect her mind, such as when she absorbs the powers/minds of particularly dark or evil characters. Rogue has a love-hate relationship with Gambit throughout most of the series, similar to the comics, even referring to herself as Mrs. LeBeau in "Hidden Agenda". However, Rogue also flirts with other characters, such as Cyclops, Archangel, Colossus, and, during the X-Men's appearance on Spider-Man: The Animated Series, Spider-Man. Rogue is one of the characters affected by the news of the 'cure', which Apocalypse and Mystique use to make mutants into slaves. Rogue was voiced by Lenore Zann. This version of Rogue also appeared in the Animated Series' two tie in comics: X-Men Adventures and The Adventures of the X-Men, with the former being based on the animated series and the latter including the same characters but with original storylines. Rogue was a regular in the first three volumes of this series, but appeared only in the final issue of The Adventures of the X-Men.
- Iona Morris (1992-1993) and Alison Sealy-Smith (1993–1997) as Storm/Ororo Munroe - Storm is voiced by Morris for the first season and the first 7 episodes of Season 2, and then Sealy-Smith for the rest of the series and the final version of the Season 1 episodes. Storm serves as second-in-command of the team and also has many episodes dedicated to her like "Storm Front" where she is called upon by Arkon to save an entire planet. In Season 2, The Shadow King lures Storm home to Mt. Kilimanjaro by 'possessing' her young spiritual son Mjnari. Storm also has her own episodes in "Savage Land Pt. 1 and 2", where Sauron captures Storm for her powers. She is also claustrophobic.
- George Buza as Beast/Dr. Henry "Hank" McCoy - At the start of the first season, Beast is arrested for the X-Men's raid on the Mutant Control Agency's building. Rather than be broken out by his fellow X-Men, Beast insists on having his day in court to prove mutants are not out-of-control or above the law. However, after his life is saved by the X-Men, Robert Kelly has a change of heart about mutants – his first acts being arranging Beast's bail and pardon. Upon rejoining the team full-time in the second season, Beast takes part in many adventures. One such episode, "Beauty & the Beast" (which detailed Beast and a normal human's mutual romantic interest), won particular acclaim. Buza also voiced Beast in "The Mutant Agenda"/"Mutant's Revenge" two-parter, a crossover with Spider-Man: The Animated Series. He offers Spider-Man advice in seeking a cure for his mutagenic disease and becomes entangled in the Brand Corporation's plot to eradicate mutants. This two-parter establishes that Beast was initially resentful of his mutancy and sought to cure himself, but his efforts led to his blue fur form.
- Chris Potter (1992-1996) and Tony Daniels (1997) as Gambit/Remy LeBeau - For much of the series, Gambit is insecure about whether the X-Men trust him, despite being loyal to the team. In Slave Island, when Gambit, Jubilee and Storm are captured by Sentinels, he pretends to abandon the captured mutants, but only to escape and return to rescue them. In "Days of the Future's Past", the time traveler Bishop accuses Gambit of betraying the X-Men by assassinating Senator Robert Kelly. The traitor is revealed to be the shapeshifting Mystique disguised as Gambit. One episode explores Gambit's past as a member of the Guild of Thieves, and his romantic relationship with Bella Donna. Throughout most of the series, Gambit maintains a flirtatious relationship with Rogue, eventually telling her that he loves her in the episode "Reunion, Part 2" though nothing more comes from this. He also guest starred in Spider-Man: The Animated Series in the 1990s in the fourth and fifth episodes of the second season, along with the rest of the X-Men.
- Alyson Court as Jubilee/Jubilation Lee - Jubilee is close to many X-Men, including Gambit, as he helps save her from the Sentinels in the pilot "Night of the Sentinels". She also had a very close relationship with Wolverine, who dotes on her in his own gruff way; in one episode, Logan teaches Jubilee how to drive. In the final episodes, her appearance was redesigned without an in-universe explanation to her Generation X look. She also guest starred in Spider-Man: The Animated Series in the 1990s in "The Mutant Agenda"/"Mutant's Revenge", along with the rest of the X-Men.
- Catherine Disher as Jean Grey/Phoenix - As in the comics, Jean Grey is in a relationship with Cyclops, eventually marrying him while being the target of Wolverine's unrequited affection. She is a warm, friendly person who when necessary steps in and plays peacemaker between Cyclops and Wolverine. The entire saga of the Phoenix is adapted in the third season, subdivided into the five-part "Phoenix Saga," in which Jean acquires the power of the Phoenix and the battle for the M'Kraan Crystal occurs, and the "Dark Phoenix Saga", showcasing the battle with the Hellfire Club, her transformation into Dark Phoenix, and the battle to decide her fate. She also appears in Spider-Man: The Animated Series in the 1990s in "The Mutant Agenda"/"Mutant's Revenge", along with the rest of the X-Men.
- Cedric Smith as Professor X, Red Skull - Professor X appears in 20 episodes as a core member of the regular character lineup. He uses a hovering wheelchair similar to that provided by Lilandra in the comics. Cedric Smith also voiced the role in two episodes of Spider-Man: The Animated Series featuring the X-Men. Spider-Man tries to get help from Professor X to find out what he is mutating into only to learn that Professor X does not have the ability to know.
- Red Skull appears in a flashback in the "Old Soldiers" episode.
- Dennis Akayama as Iceman/Bobby Drake, Silver Samurai, Sunfire - Iceman appeared as a former member of the team, who quit due to disagreements with Xavier. He appears in the episode "Cold Comfort". Iceman also appears in many flashbacks which include "Sanctuary Part 1" and "Xavier Remembers".
- Silver Samurai appeared in the episode "The Lotus and the Steel". He is a gang leader whose thugs terrorize every village for tribute to him each year.
- Sunfire makes many non-speaking cameos, merely serving the purpose of a stock character. However, he also had speaking roles in the episodes "Slave Island" and "Graduation Day" (where he becomes a follower of Magneto). On the show, he was portrayed with an extremely thick Japanese accent.
- Philip Akin as Bishop - Bishop travels back in time to stop the assassination of Senator Kelly and prevent the Days of Future Past timeline from occurring. Bishop believes Gambit to be the assassin, but it is later revealed that Mystique attempts the assassination in the guise of the Gambit. Upon returning to his own time after saving Kelly, he finds the world infected with a deadly plague. He returns in a later episode to stop the spread of Apocalypse's techno-organic virus, however, he also faces resistance from Cable, who knows the virus is necessary as it will create antibodies necessary to the stabilization of the mutant genetic code. He also shows up in some more episodes, where he and his sister travel back in time to stop Fitzroy from killing a young Charles Xavier in the past, causing constant war between mutants and humans in the X-Men's time, and his time changes into one in which mutants have been all but exterminated by Master Mold. They save Xavier, but Bishop is trapped in the Axis of Time during Apocalypse's attempt to control all of time in the "Beyond Good and Evil" episodes. After Apocalypse's defeat, Bishop returns to his own proper timeline.
- Melissa Sue Anderson as Snowbird - Snowbird appears in episode "Repo Man". She displays her shapeshifting abilities as she assumes the form of a snow owl and a white wolf when trying to capture Wolverine. She also makes a brief appearance in the episode "The Phoenix Saga: Child of Light".
- Harvey Atkin as Sasquatch/Doctor Walter Langkowski - Sasquatch (along with other members of Alpha Flight) appeared in the episode "Repo Man".
- Lawrence Bayne as Cable, Erik the Red, Fabian Cortez, Captain America - Cable made six appearances in the episodes "Slave Island", "The Cure", "Time Fugitives (Parts 1-2)", and "Beyond Good and Evil (Parts 1-4): The End of Time". He was voiced by Lawrence Bayne in the English version and by Tesshō Genda in the Japanese dub. This version of Cable possessed his trademark metal arm but it is referenced as being a bionic construct rather than a result of the techno-organic virus. In this series, he lacks his comic book counterpart's telepathic powers, though telekinetic powers remain. There is also a discontinuity as to the age of his son Tyler, who appears as a child and an adult in different episodes both set in the year 3999, though several changes to the time-line had occurred.
- Davan Shakari, using the Erik the Red alias, mostly appeared in the Phoenix Saga episodes. His main purpose was to capture Lilandra and the M'Kraan Crystal for D'Ken.
- Fabian Cortez first appears in the two-part episode “Sanctuary”. As in the comics storyline, Cortez is the leader of the Acolytes and uses his powers to bolster Magneto’s own abilities. However, Cortez’s extreme anti-human sentiments lead him to betray Magneto and try to kill him. Apocalypse grants him the ability of altering the mutations of other mutants. Cortez then appears in the final-season episode “The Fifth Horseman,” now turned into a servant and worshiper of his savior.
- Captain America appeared in one episode, "Old Soldiers". He is an American agent, sent along with Canadian agent Wolverine, to rescue a scientist kidnapped by the Red Skull and the Nazis. He is present in the episode only in flashbacks of Wolverine's. The Red Skull was voiced by Cedric Smith, who also voiced Professor X throughout the series. Additionally, Captain America appears in a brief cameo in the episode "Red Dawn", before the awakening of his Russian counterpart, Omega Red. An alternate version of Captain America appeared in the episode "One Man's Worth". In a timeline in which Charles Xavier was murdered before founding the X-Men, Captain America is the leader of a taskforce of superhuman mutant hunters fighting a war against the Mutant Resistance led by Magneto.
- Nigel Bennett as Mastermind - Mastermind appears with The Inner Circle/Hellfire Club in the episode, The Dark Phoenix Saga parts 1-3 voiced by Nigel Bennett. Wyngarde is also a member of the Mutant Resistance in the alternate reality shown in the first part of the episode One Man's Worth.
- Rick Bennett as Colossus (in "The Unstoppable Juggernaut"), Juggernaut/Cain Marko
- Juggernaut fully appeared in three episodes: "The Unstoppable Juggernaut," "Phoenix Saga Part 3: Cry of the Banshee" (with a teaser cameo at the end of the previous episode), and "Juggernaut Returns". He attempted to get revenge on Xavier, his stepbrother in this continuity, in all three episodes.
- James Blendick as Apocalypse/En Sabah Nur (1997), High Evolutionary - In "The Fifth Horseman", Apocalypse is shown to be communicating from the astral plane with Fabian Cortez, whom Apocalypse had turned into his servant prior to the Axis of Time events. He charged Cortez with finding a powerful mutant for him to be reincarnated in. However, it resulted in Apocalypse claiming Cortez himself for the vessel, and Apocalypse lived once more. Apocalypse is one of only a few villains to appear in all five seasons of X-Men.
- In the episode "Savage Land, Savage Heart" Pt. 2, the High Evolutionary appeared in a flashback, defeating and imprisoning Garokk in the Savage Land. Later, in the episode "Family Ties," the High Evolutionary (voiced by James Blendick) is shown to be the Master of Wundagore. When Quicksilver and Scarlet Witch came to Wundagore to find Lady Bova, he was unsure it was them at first until he used his machine to find out it was them. After Lady Bova reveals that Magneto is responsible for their mother's death, the High Evolutionary told them that he was at a nearby cemetery and sends some of his warriors to accompany them. When Magneto is taken down, the High Evolutionary's New Men restrain Quicksilver and Scarlet Witch. When Wolverine attacked, knock-out gas filled the area causing him, Magneto, Quicksilver, and Scarlet Witch to become prisoners of the High Evolutionary. He seeks to create a superior generation of his New Men by using mutant DNA, mutating humans into beast-like beings, instead of experimenting on animals. He sets up a trap to capture Magneto. After he reveals that fact and mentions to Quicksilver and Scarlet Witch that Magneto is their father, he takes Wolverine and uses his genetic machine to turn him into a werewolf-like monster. When Professor X and Beast arrived in Wundagore, the High Evolutionary instructed his New Men to bring him Beast. After a brief fight with the X-Men, the High Evolutionary escapes with his New Men. The effects he caused on the valley his fortress was in were reversed as was Wolverine's transformation.
- Robert Bockstael as Ka-Zar, Sauron - Ka-Zar appeared in both two-part episodes "Reunion" and "Savage Land, Strange Heart".
- This version of Sauron did not possess the fire breath or sonic scream of his comic book counterpart. Also, Lykos was apparently an inhabitant of the Savage Land, as he knew and was friendly with Ka-Zar. Lykos was the victim of Mister Sinister's experiments, forced to feed on energy and transformed into Sauron upon mutant contact. Sauron aided Mister Sinister in his efforts to destroy the X-Men. He later attempted to conquer the Savage Land for himself, but was ultimately defeated. With no mutants left in the Savage Land, Lykos was free to live in peace and welcomed into Ka-Zar's tribe.
- Christopher Britton as Mister Sinister/Nathaniel Essex - As in the comics, he is a scientist obsessed with Cyclops and Jean Grey's genetics, claiming to have watched them all their lives. He leads the Nasty Boys and the Savage Land Mutates. He sees little value in Xavier's dream for co-existence or Magneto's preparations for war, instead believing that the goal should be pushing mutants to the next stage of their mutations. He is responsible for reviving Morph and intended to use him to destroy the X-Men. The episode "Descent" reveals Mister Sinister's origin. Instead of being remade by Apocalypse, Essex's own experimentations during the Victorian era are what made him into Mister Sinister (He is also shown to have known the ancestors of Cyclops, Jean Grey and Xavier). Mister Sinister was set to appear in a Secret Wars episode of Spider-Man The Animated Series. His appearance was canceled due to the decision to pull the X-Men cast (save for Storm) from the story.
- Lally Cadeau as Doctor Moira McTaggart - She first appeared in the episode "The Cure", where supposedly knew a doctor with a cure for mutants. The next episode was "The Phoenix Saga, Part 2", where was worried about Professor Xavier, in the "Dark Phoenix Saga" was working to help Jean Grey freed from the Phoenix, the next appearance was in "Proteus", in which she reveled to Xavier Proteus was her son. Here she seems to fill the function of Gabrielle Haller, an old lover of Charles and mother of his son, the powerful but disturbed psychic boy David. Her next appearance was "The Phalanx Covenant, Part 2", when she was infected by Phalanx. Her last appearance was in "Graduation Day", when she and Beast debated on how to contact Lilandra Neramani to help Professor X.
- Robert Cait as Colossus/Piotr Rasputin (in "Red Dawn"), The Blob/Frederick J. Dukes - Colossus made a few other silent cameos in a couple of episodes throughout the rest of the series, (usually in reference to alternate futures or time travel related episodes.)
- Blob, Pyro, and Avalanche serve as henchmen for Mystique.
- Len Carlson as Senator Robert Kelly - Robert Jefferson Kelly ran for president on an anti-mutant campaign during the beginning of the show's first season. Kelly came to befriend the X-Men and support mutants shortly after his election as President of the United States, in the season's final episode, after the X-Men had rescued him from both an assassination attempt by Mystique (who was posing as Gambit to make it look like the X-Men did it) and an attempted brainwashing by Master Mold. In the first episode of season two, Kelly took office as president, spoke out in support of mutants, and made his first presidential act an official pardoning of Beast, who had been unfairly arrested early in season one. These actions led Kelly's former, anti-mutant supporters to feel betrayed by him and create the public anti-mutant backlash that pervaded the entire second season of the show. In the third through fifth seasons of the animated series, President Kelly had a low profile. He remained friendly with the X-Men through the show's end, working with them to confront global mutant threats such as Magneto's building an armed, inhabitable, mutants-only asteroid in space during the fourth season.
- Randall Carpenter as Mystique/Raven Darkholme (1992–1993) - Mystique is shown as the leader of the Brotherhood, a close ally of Apocalypse, and Rogue's foster mother (as well as Nightcrawler's biological mother). In the first season, Mystique aids Apocalypse in transforming several mutants into his Horsemen and later attempts to assassinate Senator Kelly (under orders of Apocalypse), a task for which she takes Gambit's form (she fails because of the real Gambit's interference).
- John Colicos as Apocalypse/En Sabah Nur (1993–1995), additional voices - In this animated version, Apocalypse is portrayed as extremely violent, insane, and a virtually invincible opponent, who also exhibits several characteristics of psychopathy. Apocalypse makes several appearances throughout the series, attempting to destroy and remake the "corrupt" and "weak" world in his own image. His first appearance is part of a plotline revolving around an offer to cure mutations. He is secretly behind the assassination attempt of Senator Kelly. He also appears in "Time Fugitives", where he masquerades as a member of the Friends of Humanity and uses Graydon Creed to create a virus that would kill millions of people if mutants were ever infected. In "Obsession," his former horseman, Archangel is shown to have become hell-bent on destroying Apocalypse and discovered that the immortal mutant has a weakness. This is revealed to be a hoax created by Apocalypse himself to lure Archangel out into the open. During this episode, Apocalypse is shown to possess a sentient alien ship, who sacrificed itself to send its master into deep space and (temporarily) save Earth. Out in space, Apocalypse witnessed Magneto's televised speech declaring Asteroid M a safe haven for mutants, and with Deathbird, he revived Fabian Cortez, after he had been left to die at Asteroid M by Magneto. In the "Beyond Good and Evil" storyline, towards the end of the series, Apocalypse attempts to attain godhood by kidnapping the most powerful psychic beings from across the universe, planning to kill them simultaneously, in order to release a wave of psychic energy powerful enough to destroy everything. Inside the Axis of Time, he then would recreate the universe in his own image. Magneto and Mystique had been assisting Apocalypse without full knowledge of his intentions, believing Apocalypse would merely recreate an Earth ruled by mutants; upon learning Apocalypse's true plot, they turned on him and helped the X-Men to stop him. In the end, the freed psychics used their combined powers to bring Apocalypse out of the Axis of Time into the present, where they claimed (with his Lazarus chamber having been destroyed as soon as it was completed, preventing him from having ever used it) he would simply "cease to exist."
- Rod Coneybeare as Avalanche/Dominic Szilard Petros - He was always accompanied by Pyro and later on, the Blob. He is part of the Brotherhood, which is led by Mystique.
- David Corbain as Tar Baby - Tar Baby appears along with the other Morlocks in the episode "Captive Hearts".
- Jennifer Dale as Aurora, Domino, Mystique (1994–1997) - Aurora appeared in the episodes "Slave Island" and "Repo Man" voiced by Jennifer Dale. In the cartoon, Aurora possessed the ability to fly and generate a blinding light when she slapped hands with her brother Northstar.
- Domino appeared in a several quick cameos throughout the run of the X-Men animated series starting with the first episode "Night of the Sentinels." She also had a cameo in the episode "Slave Island".
- In the second season, it is revealed that Mystique is Rogue's adoptive mother, who took her in after her real father threw her out. Mystique teaches Rogue to use her powers to harm people, until she goes too far and has Rogue permanently take Ms. Marvel's powers, leading Rogue to run away. It is revealed that Mystique only tried to brainwash Rogue to get her back. Mystique appears and attempts to convince Rogue to return to the Brotherhood, though she fails in the end. Mystique once again appears as an ally of Apocalypse in the "Beyond Good and Evil" storyline; however, when Magneto realizes how mad Apocalypse's intentions are, Mystique joins him in trying to stop Apocalypse. In her final appearance of the series, Mystique is kidnapped by Graydon Creed, her child by Sabretooth. She is forced to send a letter to her other son, Nightcrawler, to lure him to a trap in exchange for her life. When Rogue asks why she would endanger her own son, she tells them it was to save Rogue from Graydon Creed, since Rogue is her favorite of the three. Creed attempts to kill all the mutants, but they escape. As Mystique flees, Nightcrawler gives chase because he wants to know why she abandoned him. Even though Mystique coldly tells him that she did not want him, Nightcrawler cannot bring himself to hate her and tells her that he will pray to God to allow him to forgive her. Touched that in spite of her cold treatment her son still cares for her, Mystique apparently sacrifices herself to save Nightcrawler when Creed attempts to shoot him. Though assumed dead by the X-Men, Mystique is shown to have survived and is last seen looking back at her two children with tears in her eyes.
- Len Doncheff as Omega Red - Omega Red appears in the episodes "Red Dawn" and "A Deal with the Devil" of X-Men: The Animated Series. In the original X-Men TV series produced by Saban, Omega Red claimed that the armor, like his tentacles, was made of carbonadium. Whether or not this means the armor in the comics is also made of the material is unknown.
- Adrian Egan as Cannonball/Samuel Guthrie, Quicksilver/Pietro Lehnsherr - Cannonball made an appearance along with his sister Paige Guthrie in the episode "Hidden Agenda". The episode featured Rogue learning about a new mutant that has been making waves in a small Kentucky mining town. However, his appearance caused a violation of continuity, as Cannonball had already made several quick cameos throughout the series already employing his mutant power, and with blond hair, and his X-Force uniform complete with his signature goggles. His first appearance in the series is in the first episode entitled "Night of the Sentinels: Part I"). He, Sabretooth, Magneto, and Domino are on the televisions Jubilee accidentally turns on with her powers while exploring the X-Mansion.
- Quicksilver guest-stars in 4 episodes. He appears first as a member of X-Factor and in a later episode, he and the Scarlet Witch are revealed to be Magneto's children.
- Richard Epcar as Gladiator - Gladiator appears as part of the Phoenix Saga in Season 3, Episode 5, "Cry of the Banshee".
- Barry Flatman as Vindicator, Henry Peter Gyrich - Hudson appears in the under the codename Vindicator.
- Henry Peter Gyrich is against mutants and is first seen alongside Bolivar Trask, overseeing the Sentinel project. Once it was shut down, he resurfaced as part of a Genoshan Slave Camp as seen on "Slave Island." He and Trask are seen a few more times, typically on the run from Master Mold. In the final episode, "Graduation Day," Henry Peter Gyrich speaks at an Anti-Mutant Summit detailing about the various mutant attacks. Professor X appears trying to convince Henry that not all mutants are evil. Henry retaliates by attacking Professor X with a sonic gun which ends up putting Professor X close to death, and causing him to involuntarily broadcast psychic waves, revealing Xavier as a mutant to the world. As the X-Men present rush to Professor X's aid, Henry Peter Gyrich is dragged away by the security guards.
- David Fox as Sentinels, Master Mold - Sentinels appeared in a number of episodes. The first episode revolves around Sentinels hunting down Jubilee. The Sentinel program, controlled by Bolivar Trask and Henry Peter Gyrich, was cancelled by the president and the project moved overseas to Genosha. Trask constructed Master Mold while on Genosha, but it was apparently destroyed when Storm flooded the complex. Sentinels later appeared in the "Days of Future Past" episode. As with the comic series, in the future timeline, Sentinels had taken over the world and mutants were on the verge of extinction. In "The Final Decision", the season one finale, Master Mold reappeared in a secret base constructed by Trask and Gyrich in the United States. Acting under orders from Trask, the Sentinels rescued Senator Kelly from Magneto, but Master Mold then declared that he was "giving the orders now." Master Mold had plans to kidnap world leaders from around the world and replace their brains with computers so that the world would fall under his control. Master Mold had concluded that mutants were humans, and therefore, humans must be protected from themselves. He planned to bring order and peace to the world in accordance with his programming to protect humans from mutants. Charles Xavier destroyed Master Mold's body by flying an explosive-filled Blackbird into the robot's chest, escaping at the last minute. However, Master Mold's head survived and planned on rebuilding a new, stronger body, while also placing Xavier under his control. He was finally destroyed by Morph. The Sentinels also appeared in the Spider-Man: The Animated Series episode "The Mutant Agenda". They are seen in a Danger Room simulation. Spider-Man accidentally activated the simulation when he visited the X-Men seeking help from Professor X with his recent mutation.
- Master Mold also serves an important role during the first season. In one episode, the X-Men Gambit, Storm, and Jubilee are kidnapped by Sentinels, sent by Trask and Henry Peter Gyrich, while vacationing on the fictional island of Genosha. There, the three X-Men, along with several other mutants, are enslaved by Trask and Gyrich who are harnessing the mutants' powers to create a massive dam in Genosha whose water power will be used to run Trask's newly created Master Mold. The X-Men eventually escape Genosha and destroy most of the Sentinels by Storm's flooding the dam. Later on in the season, they learn that Trask has lost control of Master Mold, who is now stationed in Washington, D.C. Master Mold has Senator Kelly, and dozens of other important world leaders, kidnapped and demands that Trask replace their brains with computers that can be controlled by Master Mold. Master Mold rationalizes that his created purpose to protect humans from mutants is illogical, since mutants themselves are humans, so he tells Trask that he and his Sentinels are the only things that could protect humanity from itself. The X-Men help rescue Trask and Kelly from Master Mold, and at the end of the season's last episode, Professor X, with the help of Magneto, flies the X-Men's jet full of explosives into Master Mold's torso. Master Mold and all Sentinels are believed to be destroyed at this point, but they resurface in season four. It is revealed that several Sentinels, and Master Mold's head and intelligence, had survived Xavier's attack. Master Mold was commissioning Sentinels to steal top-secret, indestructible lightweight plastics in order to create a new body for himself. He also had Sentinels kidnap his creators, Trask and Gyrich, whom he felt had betrayed him, as well as Xavier, whose brain he plans on grafting into his new body to acquire his powers. The X-Men eventually freed them and Morph destroyed Master Mold's head once and for all. However, in Bishop's timeline, Master Mold has been rebuilt and rules the United States, using the Sentinels to hunt down mutants who are put in concentration camps.
- Don Francks as Sabretooth/Victor Creed, Puck/Eugene Milton Judd, Shaman - Sabretooth makes many appearances throughout the course of the show, sometimes as an enemy of Wolverine and the X-Men and other times as their reluctant ally. In the second season episode "Beauty and the Beast," Sabretooth's name is said to be Graydon Creed Sr., rather than Victor Creed, to provide less confusion as to the paternity of Graydon Creed, the founder of the anti-mutant group The Friends of Humanity. It is also revealed that Sabretooth was born in Edmonton, Alberta, although his birthplace has never truly been specified in the comics. Also, Sabretooth, in a version mirroring his "Age of Apocalypse" and Exiles persona, can be seen fighting alongside Wolverine and Storm for Magneto in the fourth season episode "One Man's Worth."
- The original Puck appeared in the episode "Repo Man".
- Shaman appears in the X-Men episode "Repo Man". He is shown as a member of Alpha Flight.
- Catherine Gallant as Famine - Famine appeared in three episodes of the X-Men. In "Come the Apocalypse" voiced by Catherine Gallant. Famine was selected by Apocalypse and transformed into his Horseman. In "Beyond Good and Evil," parts 3 and 4, she fought alongside the other Horsemen when the X-Men sought out Apocalypse's Lazarus chamber. While in Egyptian garb with the others, Famine was the only one who resembled the actual Earth-616 version.
- Paul Haddad as Nightcrawler/Kurt Wagner, Arkon - Nightcrawler makes several guest appearances throughout the series but his featured appearances are in the episodes "Nightcrawler" and "Bloodlines", where he works with the X-Men but never joins the team. He is first shown in a split second cameo during Jean Grey's telepathic scan of the world while searching for Professor Xavier in the episode "Repo Man". Nightcrawler also appears as one of the freedom fighters of the alternate future alongside other X-Men in the future where Xavier never existed in the episode "One Man's Worth: Part I". Although a cameo, this episode shows Kurt as more aggressive in his fighting style yet still shows his characteristically kind heart while tending to a knocked out Storm while on the battlefield. He also teleports differently in the episode from the purple brimstone "BAMF" as in the comics to a new white sparkly flash when he teleports. Nightcrawler makes his official debut in the episode entitled "Nightcrawler" which features him as a monk in a Swiss abbey, persecuted by one of his superiors and the townspeople who believe him a demon; Gambit, Rogue, and Wolverine help him through his trials while Nightcrawler helps Logan rediscover God. The second episode reveals his origins as the birth son of Mystique, where he discovers he and Rogue are in fact foster-siblings and he is half brother to mutant bigot and founder of the "Friends of Humanity" Graydon Creed. Kurt still cares for his mother despite the fact that she openly rejects him. Mystique apparently sacrifices herself to save Nightcrawler when Creed attempts to shoot him in a plot for the "Friends of Humanity". Though assumed dead by all but Wolverine, Mystique is shown to have survived and is last seen looking back at her two children (Rogue and Nightcrawler) with tears in her eyes.
- Arkon appeared in the X-Men episodes "Storm Front" Pt. 1 and 2. In the series, Arkon, unleashes terrible weather conditions over Washington, D.C. to get Storm's attention. When she arrives to quell the weather, he begs her to return with him to his planet, Polemachus, to save it from meteorological chaos which threatens his people. Storm agrees to come, but both intrigued by this dynamic leader and slightly suspicious, she leaves a clue for the other X-Men to follow. Once Storm saves the planet she is proclaimed savior of Polemachus and Arkon asks her to marry him. She leaves him after learning that his ships are bringing thousands of slaves from nearby planets, and knows that Arkon is a tyrant.
- Graham Halley as Pyro/St. John Allerdyce - He appeared in four episodes (although he only had lines in three) as part of Mystique's Brotherhood of Mutants, and was characterized as British, using stereotypical British slang terms such as "old bean" and "old girl" in conversation.
- Brett Halsey as Bolivar Trask - Bolivar Trask is the creator of the Sentinels and was much longer-lived than his comic counterpart, returning for several episodes (one of which ironically featured him on the run from his own creations, along with Gyrich). Trask was introduced here in the second episode of this series. He was later seen sacrificing himself to destroy Master Mold.
- Roscoe Handford as Carol Danvers/Ms. Marvel - Carol Danvers appears in the episode "A Rogue's Tale".
- Terri Hawkes as Polaris/Lorna Dane - In the episode Cold Comfort, she is a member of X-Factor. Polaris had been a member of the X-Men alongside her boyfriend Iceman, though they eventually left to pursue a normal life. However, Polaris left Iceman and became a member of X-Factor and fell in love with Havok. She returns in the final season to help battle the Phalanx.
- David Hemblen as Magneto/Erik Lensherr - Curiously, though he began on the show as a villain, his character spent more time as an ally to the X-Men, fighting alongside them against common enemies such as the Sentinels and Mr. Sinister as opposed to the cold-hearted villain he was previously portrayed as in earlier shows like Pryde of the X-Men. In the series, he briefly appears in the first episode "Night of the Sentinels: Part I" on a television screen Jubilee accidentally turns on with her powers but Magneto makes his true first appearance in the third episode "Enter Magneto", where he attempts to incite a war between humans and mutants by attacking a military base and launching its nuclear armaments, though they are prevented from reaching their targets by the X-Men. He reappears in the next episode "Deadly Reunions", when he attacks a chemical plant in an effort to draw Xavier out to face him. After defeating Cyclops, Rogue and Storm, Xavier meets his challenge and they do battle. Though Magneto gains the upper hand, Xavier tortures him with repressed memories of his childhood during The Holocaust, causing Magneto to flee in agony. In the first season finale, he kidnaps Senator Kelly in order to once again attempt to begin a war, but is thwarted by a group of Sentinels. After Mastermold and the other Sentinels rebel against their creators and become a threat to the entire world, Magneto allies himself with the X-Men and they successfully eliminate the Sentinels, during which he saves Xavier's life. He appears in nearly every episode in the second season, in which he and Professor Xavier have been depowered and travel throughout the Savage Land. At the end of that season, all of the X-Men save them from Mr. Sinister, and they regain their powers. In season four, he creates Asteroid M as a safe haven for mutants who feel persecuted on Earth. Though his intentions are noble, a betrayal by his closest servant Fabian Cortez puts into motion a series of events after which he realizes that the world will never again trust him as the leader of the Asteroid, and he allows the base to be destroyed. In the fourth season finale, Magneto teams up with Apocalypse, believing that the immortal will use his powers to resurrect his wife. When he discovers that Apocalypse plans to destroy all reality, Magneto helps the X-Men to defeat him. Disheartened by the loss of his sanctuary, he does not care about even the impending assimilation of mankind by the Phalanx, until he receives news from the Beast, Forge, Mr. Sinister and Amelia Voght that his son, Quicksilver, has been kidnapped by the Phalanx in the second part of the two-part fifth season premiere. He teams up with them to defeat the Phalanx and save everyone they had captured or assimilated. His final appearance is in the last episode of the series "Graduation Day", he has gathered up an entire army of rebellious mutants, and is poised to conquer the world, but receives news from Wolverine, Cyclops and Jean Grey that Professor Xavier is dying. Relenting, Magneto uses his power in conjunction with Xavier's in order to contact Lilandra Neramani, who takes Xavier to her planet where there is a suggestion that he may be cured. He is last seen along with the X-Men standing outside the mansion as Professor X departs. As with many television shows, X-Men: The Animated Series has suffered from continuity errors. For one, in the episode where Magneto makes his initial appearance, aptly titled "Enter Magneto", the X-Men do not know him, as he is an old acquaintance of Xavier's. However, as the series progresses Magneto is shown fighting Iceman during a flashback in "Cold Comfort". It may be possible that only Iceman knows him since he was not present in "Enter Magneto" and was the only one fighting Magneto in the flashback.
- Dan Hennessey as Ruckus, Sunder - Ruckus played a prominent role as leader of the Nasty Boys. He seemed to be older, but retained his youthful arrogance. The others often cracked jokes at him being Sinister's "lapdog".
- Sunder appears alongside the Morlocks, exhibiting the same strength as the comics version. He was unable to stand up to Rogue though. Later, in the episode "Secrets Not Long Buried", he is one of the many residents of the mutant-dominated community of Skull Mesa.
- Rebecca Jenkins as Dr. Heather Hudson - Heather Hudson appears in the X-Men episode "Repo Man".
- Rene Lemieux as Northstar - Northstar appears in the episodes "Slave Island", "Repo Man", and the Phoenix Saga's "Child of Light". He is voiced by Rene Lemieux. No mention or hint is made of his sexual orientation. In the cartoon Northstar possesses the ability to fly and generate a blinding light when he slaps hands with his sister Aurora. Though he did not have any speaking role in Slave Island, the episode Repo Man showed the character's origins as he spoke with a French Canadian accent. In "Slave Island", Jean-Paul is a hostage/prisoner of the island nation of Genosha. He, along with many other mutants, provides slave labor for the government using their mutant skills for such tasks as building dams. They wear special collars which restrict them from using their powers to escape, and they sleep in prison-like cells. They eventually escape Genosha with the help of the X-Men. In "Repo Man", Northstar is shown as part of the Canadian Special Forces team Alpha Flight, which tries to convince former member Wolverine to rejoin. Northstar and other Alpha Flight members make a brief cameo in "Child of Light".
- Judy Marshak as Plague/Pestilence - Plague first makes a cameo in the episode "Captive Hearts". She appears as one of the Morlocks fighting the X-Men and incapacitating Gambit. She returns in the episode "Come the Apocalypse" wanting a cure and is eventually transformed into the Horseman Pestilence.
- Peter McCowatt as Amphibius - Amphibius has appeared in the two-part 'episode "Reunion", voiced by Peter McCowatt (with a distinctive hissing, electronically-enhanced voice).
- James Millington as War - The original War appeared in three episodes. In “Come the Apocalypse,” where War was selected by Apocalypse and transformed into his Horseman; the second and third, “Beyond Good and Evil,” Parts 3 and 4, where he fought alongside the other Horsemen when the X-Men sought out Apocalypse’s Lazarus chamber. Instead of using his mutant abilities in the latter two episodes, he used an energy-projected sword. In his first appearance, he is shown not getting along with the woman who would become Pestilence, a nod to their disagreeable natures in the comics.
- Tracey Moore as Emma Frost - Emma Frost first appears in cameos during the episode "The Phoenix Saga - Part IV". She is again featured as the White Queen of the Inner Circle Club in "The Dark Phoenix Saga". During this series, she is a powerful telepath. Frost was able to shut out Xavier with the aid of Cerebro, and keep Professor Xavier from locating Jean/Phoenix. Emma also appears again amongst the captured telepaths in the "Beyond Good & Evil" plot.
- Stephen Ouimette as Archangel/Angel/Warren Worthington III/Death, Cameron Hodge - Archangel's origin was retold in the animated X-Men series, where Apocalypse creates the Four Horsemen of the Apocalypse. Angel goes to a scientist who claims he can "cure" genetic mutations, but is actually Mystique, a servant of Apocalypse, who turns him into Death. Angel also makes several appearances in the "Beyond Good and Evil" four-part episode (he appears in parts II, III, and IV), and during that multi-part episode, a visitor from the future indicates that he will one day join the X-Men. In a contradiction of early show continuity (which seemed to say Xavier formed the X-Men not too long before "Night Of The Sentinels"), he also appears as one of the original X-Men in two flashbacks, with he and his teammates depicted as they were in the 1963 X-Men #1 comic book. In this version, he loses the "death" status to once again become Archangel, thanks to Rogue, who saps the evil that lies within him. In all, Angel or Archangel appeared in 7 episodes of the series.
- Hodge first appeared as a lawyer for Hank McCoy, aka Beast. Later, Hodge was an ambassador working for the mutant-oppressing Genoshan government. After the corrupt government was overthrown by the combined efforts of Cable and the X-Men, Hodge, who was now missing an arm and a leg courtesy of Cable, vowed to get his revenge on the mutants. He was fortunate enough to have met up with the techno-organic alien race known as the Phalanx. Restoring his missing limbs and granting him a fraction of their power, the Phalanx promised to help him get his revenge and, in exchange, he would help them assimilate planet Earth and its inhabitants. Hodge was defeated when Beast, with the help of Amelia Voght, Forge, Magneto, Mister Sinister and Warlock, drove the Phalanx from Earth. Hodge was later mentioned in passing by a rogue military group seeking to take advantage of mutants, suggesting he has ties with them.
- Ross Petty as Ape - Ape appears in the episode "Captive Hearts" voiced by Ross Petty. He is among the featured Morlocks that fight the X-Men. In the next episode, "Have Yourself a Morlock Little X-Mas", he steals medical equipment for Leech. His last appearance was in the episode "Secrets Not Long Buried" Ape is one of the many residents of the mutant-dominated community of Skull Mesa. He is drawn twice in the scene where Cyclops walks through Skull Mesa alone.
- Jeremy Ratchford as Banshee/Sean Cassidy - He fought Black Tom Cassidy in the Phoenix Saga and alongside the X-Men in the episode "Proteus". His last appearance was in the episode "The Phalanx Covenant" Part 2 (Season 5, episode 2).
- Susan Roman as Amelia Voght, Callisto, Scarlet Witch - Amelia first appears in the two-part episode "Sanctuary". She is first seen as a member of the Acolytes, but throughout the episodes it's revealed that Amelia also started out as a nurse and tried to help Charles recover from the injuries on his legs. She even went with him to America when Charles wanted to start founding the original X-Men but later left when she and Charles had an argument. The two didn't speak again until Magneto had created his Asteroid M in outer space where mutants could live without fear. Amelia accepted the offer but Charles and some other X-Men chose to investigate Magneto's true intentions, fearing he would use the Asteroid to attack Earth. When those beliefs were discovered to be untrue, Charles and his team wanted to leave but the Acolytes' leader, Fabian Cortez, wanted to rule Asteroid M by himself and betrayed his fellow Acolytes and Magneto, sending Magneto to his apparent death. Magneto survived the crash and he and the X-Men took revenge on Cortez, but Asteroid M ended up destroyed. Amelia returned to Earth where she decided to become a nurse again, according to her, like her mother always wanted. Amelia returns in another two-part episode "Phalanx Covenant". She is revealed to have taken up a job at Moira MacTaggert's Muir Island facility. Interesting enough, Moira is also an ex-lover of Xavier. When the Phalanx attacked the base, it was completely devoured and Amelia was the only one to escape, while Moira was assimilated. Alongside Beast, Warlock, Forge, and Mister Sinister they seek Magneto for help. Together they defeat the Phalanx, saving those captured and assimilated.
- Callisto and the other Morlocks captured Cyclops and Jean Grey rather than Angel. In the Spanish-dubbed version of the show, Callisto is portrayed as a male character in the two-part episode Out of the Past.
- Scarlet Witch cameos in the episode "Repo Man", and makes a guest appearance in the episode "Family Ties".
- Ron Rubin as Morph - Morph was cast for the X-Men animated series as a "throwaway" character for the writers to kill in the opening story arc to sell the stark nature of the series. Changeling (Morph) was chosen because of his past ties to the X-Men, as well as his long absence from Marvel Comics. Being a deceased minor character in Marvel canon, he was a "blank slate" and the writers were free to do with him as they wanted without fear of reprisal from fans of the character. Morph's death was intended to be permanent, but he gained unexpected popularity, and was brought back. Sydney's codename had to be changed from Changeling to Morph as DC Comics had trademarked the Changeling name for the character who later became Beast Boy of Teen Titans fame. Morph was a member of the X-Men and a close friend of Wolverine who claimed only Morph could make him laugh. In the series' second episode, Morph was assumed to be slain by Sentinels leaving Wolverine distraught. Wolverine blamed Cyclops for leaving Morph behind, but later overcame it, having been desensitized to seeing friends die. Morph reappeared in the second season as a recurring villain who was driven progressively mad by memories of his death. Morph's psyche had been divided into two personalities: One who loved his X-teammates and one who hated them for leaving him behind. He embarked on a guerrilla campaign in the X-Mansion posing as several members of the X-Men to trap, injure, or otherwise incapacitate his former teammates. Wolverine, shocked at seeing his friend alive, tried to reason with Morph, assuring him that he was still a friend and ally and that Cyclops acted in the best interest of the team as a whole. Morph refused to accept the explanation and escaped in the Blackbird. Upon arriving on Muir Island, it is revealed that Mister Sinister had revived him, but with control implants that effectively brainwashed him. The ensuing battle would see Morph betray Sinister, ineffectively shooting him in the back, after Cyclops assured Morph he was still an X-Man. After the battle, Morph fled Muir Island, still unable to accept the camaraderie of his former team. Wolverine embarked on a personal quest to find Morph and help him, but after Morph forcibly resisted, Wolverine abandoned his quest and decided Morph was best left to sort things out on his own. In the season two finale "Reunion (Part 2)," Morph provided a tip that led the X-Men to a then-final confrontation with Mister Sinister. Sinister reactivated Morph's implant during the battle and once again forced him to betray the X-Men. Morph was poised to fire a laser weapon at Professor X and Cyclops until Professor X slips into Morph's mind and reminds him he's an X-Man. Morph, again, breaks free of Sinister's control and blasts him instead, shattering the arch-villain. Professor X then took Morph back to the X-Mansion and finally removed his implants, but determined that the psychological damage needed much more rehabilitation. Morph made cameos in two episodes during season three as a patient on Muir Island: once in a hospital bed and once in a wheelchair as Cyclops and Wolverine were leaving the island. In season four, Morph was the focal character in the episode "Courage". With the help of Moira MacTaggert, Morph showed significant improvement in overcoming his mental instability. Morph eventually returned to the X-Men when a terrorist strike interrupted his homecoming. He engaged in a scout mission with his friend Wolverine where they discovered Sentinels had once again been constructed. Morph fell victim to a flashback memory of his death at the hands of a Sentinel and was paralyzed by fear. Later, his fear also prevented him from acting when Master Mold abducted Professor X. Overcoming his guilt and fighting his fear, Morph left to challenge the Sentinels against the wishes of his teammates. However, he single-handedly dispatched many of the Sentinels and destroyed Master Mold himself by shape-shifting into Omega Red, Sasquatch, Angel, and Longshot and mimicking their powers. Though the team congratulated him and welcomed him back to the team full-time, Morph still felt insecure about his mental state and declined. He decided to return to Dr. MacTaggert, promising he would return to the team in peak mental condition. Morph returned for a cameo in the season four episode "Beyond Good and Evil (Part 1)" during Scott and Jean's wedding, sitting next to Jubilee. Morph's final appearance was in the series finale "Graduation Day," where he briefly appeared mimicking Professor X while the professor was dying due to an illness. He then morphed into Magneto to conclude the scene. Morph appeared to have regained some of his sarcastic sense of humor, indicating an improved mental state and a possible permanent return to the X-Men.
- Elizabeth Rukavina as Darkstar - Darkstar guest-starred in the episode "Red Dawn". She's initially the mutant enforcer for a group of Russian generals seeking to reestablish the Soviet Union with the aid of Omega Red. After witnessing the crimes committed by Omega Red, Darkstar rebels against the generals and sides with the X-Men and Colossus. Curiously, Darkstar did not have her Darkforce powers here and instead manipulated energy as offensive blasts and force screens. She retained her power of flight, however.
- Camilla Scott as Lilandra Neramani - Lilandra appeared in the third season, primarily during the Phoenix and Dark Phoenix episodes voiced by Camilla Scott. This Lilandra possessed limited telepathic capabilities. There, she sought out help of Professor Xavier and his X-Men to help her defeat her evil brother D'Ken. During the short time they shared alone, Xavier and Lilandra quickly fell in love and eventually managed to defeat D'Ken. When Lilandra became the new heir to the Shi'ar throne, she kissed and thanked Xavier for his help and even offered him to join her, but he declined to do this for as long as there is no peace between mankind and mutants. Lilandra left, but eventually returned to Earth when Xavier became deadly ill in the final episode of the show. She took Xavier to the Shi'ar Empire with her so they could heal him.
- Tasha Simms as Lady Deathstrike/Yuriko Oyama, Psylocke/Betsy Braddock - Lady Deathstrike had a romantic past with Wolverine. She first appeared in the Season 3 episode "Out of the Past". Yuriko Oyama joined the Reavers and became a cyborg in order to avenge the death of her father, Professor Oyama, who she believed was killed during Logan's rampage at the Weapon X headquarters.
- Psylocke appears during the fourth season of the X-Men animated series, in the Beyond Good and Evil story arc, in the episodes 51 ("Promise of Apocalypse") and 53 ("End and Beginning"). In this storyline, Psylocke appears to be a lone warrior who practices theft with a cause. She comes into direct conflict with Archangel and, later on, Sabretooth and Mystique. She refers to her brother as fighting to help mutants, but does not name him as Captain Britain. This incarnation of Psylocke had the notable ability to use her psi-blades as projectiles, incapacitating opponents from a distance and destroying matter. She also makes two small cameos during the second season, appearing in the episodes 18 ("Repo Man") and 24 ("Mojovision").
- Megan Smith as Vertigo - She was one of the followers of Mister Sinister in the Savage Land. In the series, her powers were amplified after Mister Sinister genetically modified her with Magneto's DNA. Later in the X-Men animated series she joins the Nasty Boys who were working for Mister Sinister too.
- John Stocker as Graydon Creed, Leech - Like in the comics, Graydon Creed's deep resentment towards mutants comes from his parents Sabretooth and Mystique. Graydon wound up in the care of his father Sabretooth who bullied and beat him constantly. Many years later, Graydon founded the Friends of Humanity, an anti-mutant hate group that sought to vilify mutants. After the Beast's pardon by the President, Graydon's resentment grew even more and the Friends of Humanity began targeting the X-Men. Graydon Creed began looking for new ways to exterminate mutantkind. He hired a scientist to create a virus that would wipe out every mutant on Earth though would be relatively harmless to ordinary humans. Graydon dispatches one of his followers to infect a baseline humans in contact with a number of known mutants and begins making public announcements about the dangerous plague carrying mutants. While giving a speech about the plague's effects, Graydon attempts to infect Beast with the virus though is stopped by Bishop. During the struggle, Graydon accidentally infects himself and retreats back to the lab for medical aid. The X-Men follow him, attack the base and the scientist reveals himself to be Apocalypse. The X-Man Beast helps him get clear of the battle. The X-Men destroy the virus and Graydon returns to the Friends of Humanity headquarters. In "Beauty and the Beast," Beast began dating his former patient Carly, a human causing Graydon Creed to become furious. He had Carly kidnapped and began interrogating her. Meanwhile, Beast begins searching for the missing Carly and Wolverine infiltrates the Friends of Humanity pretending to have been beaten by mutants. Graydon gladly accepts him into the fold. Moments later, an enraged Beast breaks into the Friends of Humanity and Wolverine reveals himself and rescues Carly. Before they leave, the X-Men outside set up a holographic projector displaying Xavier's profile on the mutant Sabretooth, real name: Graydon Creed, Sr. Discovering that another one of his trusted men was a mutant and seeing Sabretooth's face again, Graydon Creed becomes unstable and begins screaming wildly. Realizing that their leader was the son of a mutant, the Friends of Humanity leave him behind for the authorities. Meanwhile, the Friends of Humanity do not disband but grow larger and more organized where they are led by a council. Fully recovered though still with a strong hatred towards mutants by the episode "Bloodlines," Graydon returns to the Friends of Humanity in order to resume his old role as their leader. The council rules that to lead the Friends of Humanity once more, he has to prove himself. They tell Graydon that Sabretooth is not the only mutant in his family. The Head of the Council hands him a file with information on his mother Mystique, his foster sister Rogue, and his demonic-looking half-brother Nightcrawler. Close to madness, he agrees to kill all of the mutants in return that the Friends of Humanity would let him return to the fold. Creed kidnaps his mother Mystique and forces her to send a letter to Nightcrawler saying she was in danger. Fearing for his mother's life, Nightcrawler seeks the help of Rogue and Wolverine. They locate the Friends of Humanity's dam-base and walk straight into a trap. Graydon attempts to gas all of the mutants to death. They manage to break free and defeat Creed. Mystique slips away though and is thought to have been killed when the dam burst open (though she actually survived). Creed in his helicopter is washed away as the dam breaks down. He later wakes up aboard a helicopter bound. Four of the council members inform Graydon that he has failed for the last time by letting Mystique, Rogue, and Nightcrawler live and costing them their soldiers, who were arrested for blowing up their dam-base. As a result, Graydon has been expelled from the Friends of Humanity indefinitely. They push him from the chopper and he parachutes to "safety", right in front of Sabretooth's rural home. Sabretooth grabs Graydon upon his landing to deal with Graydon personally. Graydon's fate was unrevealed after this, but it is assumed Sabretooth killed his own son, because of the many muntant lives he'd taken.
- Leech appears in a few episodes. In addition to his power-dampening ability, he displays telekinesis. His most notable appearance was in the Christmas episode "Have Yourself a Morlock Little X-Mas" where he needed a blood transfusion from Wolverine, temporarily granting him Wolverine's healing ability in order to fight off a disease.
- Stuart Stone as Proteus - Proteus appeared in a two-part episode called "Proteus". In the animated series, Kevin had his reality warping and possession powers, but he also had the ability to change himself back into his human form as well, a power he did not have in the comics. Also, when he took over people's bodies, it did not kill them like it did in the comics, it only weakened them. Proteus himself was somewhat humanized and much less evil; he was an unstable 17-year-old adolescent with a childlike mentality and little grasp on reality (Moira kept him practically locked in her center for years), and at a certain moment he even saved a young man from being beaten up by a gang of bullies. Kevin/Proteus took off in search for his father; not knowing the truth and craving for his father's love, he blamed his mother Moira for not giving his father a chance. He then attacked Professor X, Rogue, Moira, Wolverine, and Beast, defeating them and making Wolverine experience death, which causes Logan a great deal of psychological damage. Moira tells Professor X that Proteus' father, Joseph, did not want him because he was a mutant. Professor X and the X-Men confront Joseph himself, but he refuses to listen and is only bothered about people finding out he is Kevin's father because he is a mutant. Rogue is set to protect Joseph, and she hears his speech about loving children, thus triggering her to remember her past of when her father rejected her due to her own status as a mutant. Kevin arrives at the hall and attacks Rogue and Beast as Joseph leaves. Professor X tries to reason with Proteus and he blames the Professor for keeping Joseph away from him. Wolverine arrives in time to save Professor X and Beast. Professor X tries to contact Proteus mentally and tells him he can help him, but Proteus insists on seeing his father. Moira says they've tried to reason with him enough and tells them she needs to do something about it now. Kevin arrives at another speech of Joseph's, saying that he wants Joseph to love him but Joseph says that he's a trick and trying to ruin him. Joseph tells him to leave and Kevin gets so mad that he loses control. Professor X manages to stop him by using his psychic powers, calming Kevin down; he returns to his normal shape and gets a hug from Moira. Joseph arrives, apologizes to Kevin, and the two reconcile.
- Marc Strange as Forge - He is unique in that he has two separate roles in the show: in the present, he is the leader of the government-run X-Factor, and in the future, he leads the mutant team that resists the Sentinels in the Days of Future Past timeline. He was voiced by Marc Strange.
- Tara Strong as Ilyana Rasputin - Illyana appears in "Red Dawn". She and her mother remain by Colossus and the X-Men as they fought the newly released Omega Red. She also appears in one of Cable's visions of the altered time-stream in "Time Fugitives" (1993), in which, without the antibodies developed to fight Apocalypse's techno-organic virus, many mutants (like Illyana) developed harmful mutations which would eventually kill them.
- Kay Tremblay as Annalee, Shard - Annalee appeared in the episode "Captive Hearts". She seemed to have a greater control over her powers, causing the X-Men, including Jean Grey, to experience any state of mind she chose to place them in, from Wolverine believing himself to be covered with scorpions, to Jean believing herself to be a young child and Annalee her mother.
- Shard appears in the episodes "One Man's Worth" pt. 1 & 2 and "Beyond Good and Evil" pt. 1-4.
- Peter Wildman as Mojo - Mojo appeared in the episodes "Mojovision" and "Longshot". This version of Mojo had the ability of shooting laser blasts from a cannon installed at the tip of his mechanical tail.
- Rod Wilson as Gorgeous George, Longshot - Gorgeous George is shown as a member of Mister Sinister's Nasty Boys. He also appeared in X-Men Adventures, a comic which was based on the animated series.
- Longshot starred in the episodes "Mojovision" and "Longshot" and made a short cameo in "Jubilee's Fairytale Theatre". In "Mojovision", Longshot quit his own hit TV show leaving Mojo to kidnap the X-Men and have them replace Longshot in a new action series that had the X-Men literally fight for their lives. Barely surviving, the X-Men foiled Mojo's plans with the help of Longshot. In the episode "Longshot", the Lucky One stumbles to earth while trying to evade Mojo and his forces. Mojo once again makes the hunt a televised event with Longshot and the X-Men the targets. The X-Men prevail and Longshot returns home to continue leading the rebellion against Mojo. In this episode Longshot develops a deep respect and kinship with the X-Man Jubilee. This relationship is played with in a brief cameo in the fantasy-inspired episode "Jubilee's Fairytale Theatre" where Jubilee, much like a Robin Hood type character, saves a peasant Longshot from being annihilated for his disobedience against Magnus the Magnificent, a fairytale version of Magneto.
- Maurice Dean Wint as Shadow King - Flashbacks reveal how he was the first evil mutant faced by a younger Charles Xavier, who banished his spirit to the astral plane. Amahl Farouk is depicted as an athletic, middle-aged bearded man instead of the bald, obese look from the comics.
- The Acolytes appear in the two-part episode “Sanctuary”. The team as presented consists of Fabian Cortez, Amelia Voght, Marco Delgado, Chrome, Carmela Unuscione, Joanna Cargill, and Byron Calley. The Acolytes aid Magneto in the liberation of the Genoshan mutant slaves from the hands of the Genoshan Magistrates. After Magneto is betrayed by Cortez and believed to have been killed by the X-Men, the Acolytes pledge their loyalty to Cortez. After Cortez' plot was exposed, the Acolytes turn on him. Francisco Milan is shown in a video screen as one of the scientists that helped Magneto build Asteroid M. Suvik Senyaka makes a cameo appearance in the episode “Secrets No Longer Buried,” as one of the residents of the mutant-dominated community of Skull Mesa.
- Alpha Flight appeared in the episode "Repo Man". It consists of Vindicator (who had renamed himself Guardian in the comics), Puck, Snowbird, Shaman, Northstar, Aurora, Sasquatch, and Dr. Heather Hudson. The episode's story is similar to Guardian's first comics appearance (as Weapon Alpha) in Uncanny X-Men #109. Although though in the comics story, Weapon Alpha went after Wolverine solo. Vindicator and the Canadian Alpha Flight capture Wolverine. Department H demanded their project back. Either he rejoins their team or they repossess his indestructible, adamantium skeleton. Puck and Snowbird spied on the attempted adamantium-removal experiment and informed the other members. After a fierce fight between Alpha Flight and Department H's security androids, Wolverine warns the Alpha Flight members that if any of them try to seek him out, all bets are off. Later on in "The Phoenix Saga, Part 5: Child of Light," members of Alpha Flight are shown helping citizens as Earth is ravaged by the M'Kraan Crystal.
- A heavily altered version of the Brood (called The Colony) appears in the 'episode "Love in Vain". These aliens looked more reptilian than insectoid and were equipped with metallic tentacled armors instead of having organic tentacles. In addition, instead of laying their eggs in other people, they infect other races and transform them into their own kind. The classic Brood appear in the episode "Mojovision", as generic aliens that fight Rogue and Beast (in a cut out scene a Brood stung Beast in the belly to lay an egg inside of him) in one of Mojo's shows as well as the Japanese intro for the X-Men Series. A classic Brood Queen also appears in the episode "Cold Comfort" as an illusion projected by Professor X to scare away the soldiers attacking Iceman.
- "The Brotherhood of Evil Mutants" appeared with the Blob, Avalanche and Pyro being led by Mystique with Rogue being shown as a former member. The Brotherhood was shown also to be initially financed by Apocalypse, though only Mystique knew of this. Notably absent from the series was Mystique's longtime lesbian lover Destiny. As such, major changes had to be made towards the adaptation of "Days of Future Past" in which the Brotherhood attempts to assassinate presidential candidate Senator Robert Kelly.
- Externals - In the episode "Sanctuary Part 2", Saul and Gideon are seen watching Fabian Cortez announce his scheme to the Earth. In the episode "Externally Yours", Gambit's past involvement with the respective guilds of Thieves and Assassins, as well as with the External Candra (depicted here as an African-American "spirit lady", as opposed to a Caucasian telekinetic, and merely known as "The External") are detailed.
- The Friends of Humanity debuted in the second season, again founded by Creed. Former followers of Senator Kelly felt betrayed by his switch from anti-mutant to pro-mutant views brought about by the X-Men saving his life. Near the end of the season, the Friends of Humanity discovered (thanks to Wolverine) that Graydon Creed was the human son of Sabretooth and they left him in disgust. In the last season, the Friends of Humanity returned to wage war on mutants. When Creed recovered in the episode "Bloodlines," the Friends of Humanity's council gave him another chance by having him kill Mystique. The Friends of Humanity were again stopped by the X-Men and the local authorities arrested the FoH Soldiers not for attacking mutants, but for blowing up a dam that had been caught in the crossfire. When Graydon failed to kill Mystique, Nightcrawler, even Rogue as well as costing them some of their soldiers who were arrested for blowing up the dam, the four council members on the helicopter have bounded on expelled Graydon and parachuted him to the house where Sabretooth was currently living.
- The Horsemen of Apocalypse were the same ones as in the X-Factor comics. The lineup was composed of mutants that submitted themselves to the so-called Mutant Cure, developed by Dr. Adler (actually Mystique in disguise). The "Cure" process transformed the four mutants: Autumn Rolfson (Famine), Plague (Pestilence), Abraham Kieros (War), and Angel (Death) into altered mutants under the control of Apocalypse. The four-part episode Beyond Good and Evil featured another team of Horsemen, created by Apocalypse during his time in Ancient Egypt. The style of these Horsemen reflected their Egyptian origins. In the episode The Fifth Horseman, Fabian Cortez (at that point a follower of Apocalypse) creates a team called Hounds rather than Horsemen. One of them is Caliban, who resembled his appearance as "Death" in the comic books.
- The Marauders as a group are not featured in X-Men. Sabretooth is a major recurring villain, but is usually seen working alone. Additionally, Mister Sinister's primary underlings are instead the Nasty Boys and the Savage Land Mutates. Vertigo belongs to the latter group and is later seen with the Nasty Boys in the "Beyond Good and Evil" four-parter
- The Morlocks' members are Callisto, Leech, Erg, Masque, Sunder, Plague, Annalee, Ape, Scaleface, Tommy, Tar Baby, Mole, Glowworm, and Caliban. They first appear in "Captive Hearts", where the Morlocks captured Cyclops and Jean Grey. The X-Men led by Storm then came to get Jean and Cyclops back. In the end after a duel between Storm and Callisto, not only did the X-Men get Cyclops and Jean back, Storm also gained leadership of the Morlocks. Several of the Morlocks would have subsequent cameos outside of the sewers (an example being "Sanctuary"). They would have a major role to play in the episode "Out of the Past" and were last seen in "Have Yourself a Morlock Little X-Mas".
- While the Nasty Boys are barely a footnote in the extensive history of the X-Men comics, the villainous team was featured several times in the TV series, apparently used as the series' version of Sinister's Marauders. Appearing first in the episode "'Til Death Do Us Part, Part II", the cartoon featured four of the Boys: Gorgeous George (the Boys' field leader), Ruckus, Hairbag, and Slab; Ramrod never appeared in the series. The X-Man Morph, who had been resurrected by Sinister, had an "evil" side to his personality. "Evil" Morph was often a part-time member of the Nasty Boys, but Sinister increasingly lost control of him. The Nasty Boys reappeared in both parts of "Reunion" where, teamed with the Savage Land Mutates, they proved to be quite imposing to the X-Men whom Sinister had rendered powerless. The X-Men eventually regained their powers, freed Morph from Sinister completely, and defeated Sinister and the Boys. After leaving the Savage Land, the Boys reappeared with Sinister in all four parts of "Beyond Good and Evil". Vertigo apparently accompanied them (Sinister had given her a Magneto-inspired energy boost in "Reunion") and was made into a member, despite her female status. (In the comics, Vertigo was originally a member of the Savage Land Mutates, but then ended up joining the Marauders and helped to annihilate most of the Morlocks during the Mutant Massacre.)
- The Phalanx appeared in the opening two-part episode "Phalanx Covenant". The series Phalanx is an amalgamation of the comics Phalanx and the Technarchy; they are a voracious alien life-form that can assume the guise of anything or anyone. Before long, the X-Men are all captured, except for Beast, who must find a way to stop the alien horror from assimilating every single lifeform on Earth. Cameron Hodge is allied with the Phalanx, while Warlock seeks to stop it.
- The Reavers, led by Lady Deathstrike, make an appearance in the 1990s X-Men TV series.
- The Savage Land Mutates have appeared on a few episodes. The lineup was formed by Sauron, Vertigo, Brainchild, Amphibious, Barbarus, and Lupo. They were creations of Magneto, though they were later recruited by Mister Sinister.
- The Weapon X program was responsible for Wolverine's adamantium implants and memory alterations. The program (directed by Professor Thornton and Dr. Cornelius) captured Logan, Sabretooth, Silver Fox, and Maverick and used a combination of false memory implants and brainwashing techniques in order to turn them into an elite team of mind-controlled assassins. Most of the experiments and training were administered at a secret research compound in Canada. There, Thornton and Cornelius forcibly laced Logan's skeleton with adamantium using a process developed by another scientist named Dr. Oyama. Enraged by what was done to him, Logan broke free of his restraints and rampaged his way out of the facility. During the ensuing chaos, Sabretooth, Silver Fox, and Maverick were also able to escape.
- X-Factor appeared in the episode "Cold Comfort". Its lineup consisted of Forge, Polaris, Multiple Man, Strong Guy, Quicksilver, Havok, and Wolfsbane. Iceman broke into their facility to find his girlfriend Polaris and ran afoul of the X-Men. When it came to a battle against the X-Factor, Forge said it was to test them. In "Family Ties," Quicksilver was again seen as a member of X-Factor.
Reception and Accolades
The show was both acclaimed and commercially successful. Along with Batman: The Animated Series, the series success helped launch numerous comic book shows in the 1990s.
In its prime, X-Men garnered very high ratings for a Saturday morning cartoon, and like Batman: The Animated Series, it received wide critical praise for its portrayal of many different storylines from the comics.
In 2009, IGN ranked X-Men as the 13th greatest animated show of all time in their Top 100 list, the third-highest standing for a comic book-adapted show on the list. The show also ranks in at 106 on IMDB's Highest Rated TV Shows with At Least 5,000 Votes 
X-Men Adventures vol. 1 #1 (Nov 1992).
Art by Steve Lightle.
|Publication date||November 1992–March 1997|
|Number of issues||53|
X-Men Adventures was a comic book spin-off of the animated series. Beginning in November 1992, it adapted the first three seasons of the show; in April 1996, it became Adventures of the X-Men, which contained original stories set within the same continuity. The comic book lasted until March 1997, shortly after the show's cancellation by the Fox Network.
Volume 5 of the Official Handbook of the Marvel Universe A-Z Hardcovers lists the X-Men cartoon as part of the Marvel multiverse, inhabiting Earth-92131. also, the plague infested future that Bishop tried to prevent in Season 2 is listed as Earth-13393 while Cable's release then immediate cure of the plague is listed as Earth-121893.
- X-Men Adventures vol. 1 (1992–1994) (15 issues)
- X-Men Adventures vol. 2 (1994–1995) (13 issues)
- X-Men Adventures vol. 3 (1995–1996) (13 issues)
- Adventures of the X-Men (1996–1997) (12 issues)
- X-Men Cartoon Maker: The X-Men Cartoon Maker was a recreational software package that allowed the user to create animations with a minimal level of sophistication by utilizing a library of backdrops, animations and sound effects from the show. Wolverine and Storm (voice-only) help you out.
- X-Men: Released by Western Technologies INC in June 1993 for Mega Drive. (This game was later followed by X-Men 2: Clone Wars in May 1995. Sega also released several X-Men game titles for its GameGear hand held system.
- X-Men: Mutant Apocalypse: Released by Capcom in November 1994 for Super Nintendo.
- Capcom's VS. Series: The characters in the series were licensed by Capcom and were the inspiration for the video game X-Men: Children of the Atom, which in turn would be the basis for the Marvel vs. Capcom sub-series of video games. Most of the voice actors who did the voices in the series reprised their roles for the video game. Capcom would continue to use these characters long after the show was cancelled before eventually losing the rights to create Marvel-based games to Electronic Arts in 2001. Capcom, however, would reacquire the rights in 2008 and released Marvel vs. Capcom 3: Fate of Two Worlds on February 15, 2011. Some games in this series are:
- X-Men: Children of the Atom: Released in December 1994 for Arcade, PlayStation, Sega Saturn, PC.
- Marvel Super-Heroes: Released in 1995 for Arcade, PlayStation, Sega Saturn.
- X-Men vs. Street Fighter: Released in 1996 for Arcade, PlayStation, Sega Saturn.
- Marvel Super Heroes vs. Street Fighter: Released in 1997 for Arcade, PlayStation, Sega Saturn.
- Marvel vs. Capcom: Clash of Super Heroes: Released in 1998 for Arcade, PlayStation, Dreamcast.
- Marvel vs. Capcom 2: New Age of Heroes: Released in 2000 for Arcade, Dreamcast, PlayStation 2, Xbox, PSN, XBLA.
- Marvel vs. Capcom 3: Fate of Two Worlds: Released in 2011 for PlayStation 3 and Xbox 360.
Silver Surfer (TV series)
Several cast members of X-Men were also a part of the cast of the Silver Surfer animated series (also airing on Fox) from around the same period:
- Alison Sealy-Smith (Storm/Gamora)
- Norm Spencer (Cyclops/Drax the Destroyer)
- Cedric Smith (Professor X/Mentor)
- Dennis Akayama (Iceman/Watcher Prime)
- Alyson Court (Jubilee/Amber)
- Don Francks (Sabretooth/Kalek)
- Jennifer Dale (Mystique/Nebula)
- Lally Cadeau (Dr. Moira MacTaggert/Lady Chaos)
- James Blendick (Apocalypse/'Galactus)
- Camilla Scott (Lilandra Neramani/Shalla-Bal)
- Marc Strange (Forge/Lord Glenn)
- David Hemblen (Magneto/Supreme Intelligence, Husseri) - The Supreme Intelligence appeared in an episode of X-Men (again voiced by David Hemblen). He and the Skrull Empress are consulted by Shi'ar Majestrix Lilandra Neramani about the fate of the Dark Phoenix.
- Lawrence Bayne (Cable/Zedaro)
- Rick Bennett (Juggernaut/Votrick)
- Christopher Britton (Mister Sinister/Zarek)
- Robert Bockstael (Ka-Zar/Pip the Troll)
- Len Doncheff (Omega Red/Raze)
- John Neville (Major Domo/Eternity)
Uatu also made a cameo appearance in the X-Men animated series, in the episode "Dark Phoenix" part 3. The Kree ruler also appeared in X-Men during the Dark Phoenix's last episode when Lilandra consults with two other empires, the Kree and the Skrull (Queen), on Jean Grey's final outcome.
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- DRG4's X-Men the Animated Series Page
- Marvel Animation Page Presents: X-Men
- X-Men TV series cast