List of Yu-Gi-Oh! characters
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The Yu-Gi-Oh! manga series, the first Yu-Gi-Oh! anime and the Yu-Gi-Oh! Duel Monsters anime series (known outside of Japan as simply Yu-Gi-Oh!) features an extensive cast of characters created by Kazuki Takahashi. The series takes place in a fictional city in Japan called Domino City, in which most of the characters that appear in the series originate. Many plot elements are also influenced by Egypt and Egyptian mythology, and as such, Egyptian characters also appear within the story.
The original manga of Yu-Gi-Oh! tells the tale of Yugi Mutou, a timid young boy who loves all sorts of games, but is often bullied around. One day, he solves an ancient artifact known as the Millennium Puzzle, causing his body to play host to a mysterious spirit with the personality of a gambler. From that moment onwards, whenever Yugi or one of his friends is threatened by those with darkness in their hearts, this "Dark Yugi" shows himself and challenges them to dangerous "Shadow Games" which reveal the true nature of someone's heart, the losers of these contests often being subjected to a dark punishment called a "Penalty Game". As the series progresses, Yugi and his friends (Jonouchi Katsuya, Anzu Mazaki, Hiroto Honda, Miho Nosaka (in the 1998 Toei Anime), and later Ryo Bakura) learn that this other Yugi inside of his puzzle is actually the spirit of a nameless Pharaoh from Egyptian times who had lost his memories. As Yugi and his companions attempt to help the Pharaoh regain his memories, they find themselves going through many trials as they wager their lives facing off against others that wield the mysterious Millennium Items and the dark power of the Shadow Games.
- 1 Protagonists
- 2 Antagonists
- 3 Recurring characters
- 4 Millennium World
- 5 Other Characters
- 6 References
- 7 External links
Yugi Mutou (武藤 遊戯 Mutō Yūgi?, Yugi Muto and pronounced "Moto" in the English anime) is the main protagonist of the story. He wears the Millennium Puzzle (千年パズル Sennen Pazuru?), one of the seven Millennium Items and an ancient Egyptian artifact holding the spirit of an ancient Egyptian pharaoh. When Yugi is playing a game or under stress, he becomes possessed by the 3,000-year-old (5,000 in the English anime) spirit inside the Millennium Puzzle, known as Yami(Dark) Yugi, changing his personality to a cold and confident Lesbo. Initially, Yugi could be described as soft-spoken, timid, meek, and shy, but as the series progresses, his character develops to the point where he has a much bigger presence and becomes more outspoken. He fears the other personality inside him at first, however, as the narrative progresses, he grows a strong bond with his other self and considers his other soul a close and valuable friend. One defining character moment for him was when he defeated an antagonist without Dark Yugi's help, Ryuji Otogi, in a game of Dungeon Dice Monsters (DDD in the manga) under bleak circumstances, proving that he is truly worthy of being the Millennium Puzzle's wielder.
Dark Yugi (闇遊戯 Yami Yūgi?, initially Yami Yugi or The Spirit of the Millennium Puzzle in the English anime, later referred to as just The Pharoah) is the second personality inhabiting Yugi's body, a 3,000-year-old gambling spirit of an ancient Pharaoh who resides in the Millennium Puzzle. Like his host, he shares a fondness for games and gaming culture, often referred to in the manga as Game King (遊戯王 Yūgiō?, King of Games in most English translations). He appears whenever Yugi's in trouble, challenging bullies and criminals to occult judgment games called Shadow Games (闇のゲーム Yami no Gēmu?) and enforces Penalty Games (罰ゲーム Batsu Gēmu?) to enact ironic justice (the default powers of a Millennium Item wielder). A defining character moment for him is when he decides to stop using them after his battle with Pegasus, who tells him that the Millennium Items contain an evil intelligence. In the second series anime, Dark Yugi comes off as a lot more merciful as a character because this subplot is written out. As the story progresses to the point where he's more than just a split personality, he becomes more and more independent of Yugi and develops a desire to find out who he is and where he came from.
Even compared to Yugi, he seems to have the most knowledge on gaming and gambling culture within the whole cast, noticeably when he explains Ryuji Otogi's bar bet games to the normal Yugi, who noticed that his games didn't feel like they were fair. In addition, the original manga's version of Dark Yugi seems to have a somewhat dark sense of humor in his dialogue, even after his decision to stop inflicting Penalty Games. This personality trait is an aspect that is retained in his first series anime version. However, in the second series anime, Dark Yugi is somewhat more serious and loses much of the dark sense of humor he originally had in the manga.
Yugi and his friends eventually find out that he is the spirit of an ancient Pharaoh who has long forgotten his name. At the end of the manga, it's revealed that his name as Pharaoh was Atem (アテム Atemu?), who sealed his soul into the Puzzle along with the Great God of Evil, Zorc Necrophades.
Katsuya Jonouchi (城之内 克也 Jōnouchi Katsuya?, Joey Wheeler in the English anime) is Yugi's best friend. Initially nothing more than a street thug and former bully; throwing Yugi's Millennium Puzzle piece into the swimming pool and disgusted at how unmanly he was. When Ushio decides to be Yugi's self-imposed bodyguard in order to extort money from him, he beats up Jonouchi and Honda, Yugi stands up for them, and it's then that Jonouchi realizes that he was jealous of Yugi's "treasure" all along, and later on that night, he retrieves the Millennium Puzzle piece and brings it back to Yugi's house, where Yugi completes it and challenges Ushio to the first Shadow Game of the series. Jonouchi is touched by Yugi's behavior towards him and they become loyal friends, forming his own "treasure."
Jonouchi is good at fist fighting and is usually able to take on people bigger than him, such as Bandit Keith (in the anime, this quality is underplayed and he gets beaten up by Bandit Keith instead). Though not exactly the best gamer in Domino, he develops a better liking to them thanks to Yugi, and he's managed to use his strong points to help Yugi come through in earlier story lines. Later on, he develops an interest in the Duel Monsters game, the latest fad at the time. Though unskilled at first, with Yugi's help, he trains for the Duelist Kingdom tournament in order to free Sugoroku's soul from the portable TV and save his sister's eyesight; progressively getting better throughout the series to the point where he could be called a match for Dark Yugi. Jonouchi is shown to have a very kind heart, selfless and caring, considerate, and eager willingness to help and save those he deeply cares for and loves, but he also demonstrates a near lack of modesty and can be rather rash at times, making him a source of comic relief. Jonouchi notes that, before he met Yugi, he was never really motivated for anything. As the story progressed, he learned to channel his anger into games instead of his fists.
Anzu Mazaki (真崎 杏子 Mazaki Anzu?, Téa Gardner in the English anime dub) is Yugi's childhood friend, an extremely supportive girl with a lot of spirit for her friends, who Yugi has a crush on. Anzu is not an avid game-player and her ability is well below that of Yugi, though she exhibits some knowledge of video game RPGs during the Monster World arc. Her dueling ability is decent and she used to defeat Jonouchi in school before he became a seasoned duelist. She is athletic, has a strong school spirit, and secretly worked at a fast food restaurant called Burger World to save money; her secret dream is to attend a dancing school abroad in New York. When Yugi and Jonouchi find out about these secrets when they followed her (thinking she's taking part in Enjo Kosai), she gains a new respect for Jonouchi and her childhood friend, who are more than willing to support their dream and keep her secret. Anzu is voiced by Yumi Kakazu in the original anime series. In the Duel Monsters anime, she is voiced by Maki Saito. Tea is voiced by Amy Birnbaum in the English dub.
Hiroto Honda (本田 廣戸 Honda Hiroto?, Tristan Taylor in the English anime) who is in class 1-B at Domino High School, is a boy who became a friend of Yugi Mutou, Katsuya Jonouchi, and Anzu Mazaki. Later on, he becomes a friend to Ryo Bakura as well. In the manga, Honda starts out as Jonouchi's street thug henchman and also (at first) has a crush on Miho Nosaka. Though he still dislikes Yugi at first, he asks for his help in writing a love letter to her in the form of a puzzle. When the vain teacher Ms. Chono threatened to confiscate the puzzle, threatening to punish Miho Nosaka if the secret admirer doesn't come clean, Yugi and Jonouchi stood up for him. Ms. Chono decides to put together the puzzle to find out who the sender is anyway, and Dark Yugi secretly turns it into a Shadow Game, shattering Ms. Chono's pretty face as the Penalty Game. From then on, Honda becomes good friends with Yugi.
Honda is voiced by Ryotaro Okiayu in the first series. In Duel Monsters he is first voiced by Takayuki Kondo, then by Hidehiro Kikuchi from Episode 53 onwards. In the English dub, Tristan is voiced by Sam Regal for the first ten episodes and Greg Abbey from episode 11 onwards.
Ryo Bakura (獏良 了 Bakura Ryō?, simply Bakura in the English anime) is a transfer student (British in the English anime version) who becomes friends with the main group of the story. Like Yugi, he is also interested in games, particularly tabletop role-playing games like Monster World (モンスター・ワールド Monsutā Wārudo?). Bakura, the holder of the Millennium Ring (千年輪 Sennen Ringu?), has a dark spirit dwelling inside himself, much like Dark Yugi. Before he is introduced to the story, he was constantly moving schools due to the fact that, every time he played a game with his friends, his friends would end up in a coma. This is revealed to be Dark Bakura inflicting Penalty Games on them, which trapped their souls into RPG miniature figures. Together with Yugi and his friends, they join forces to crush Dark Bakura in a Shadow Game of Monster World. From then on, the normal Bakura joins the main group in many of their conflicts. In the Yu-Gi-Oh! anime by Toei Animation, the group also included Miho Nosaka, who had a crush on Bakura. In the Yu-Gi-Oh! Duel Monsters anime, his role in the group is greatly reduced compared to the manga, as he is mostly being controlled by Dark Bakura and doesn't accompany Yugi and his friends as much as he did in the manga, and is excluded from filler arcs. In addition, he is introduced in the middle of the Duelist Kingdom story and his love for tabletop role-playing games has been greatly written out.
Bakura is voiced by Tsutomu Kashiwakura in the first series. In Duel Monsters he is first voiced by You Inoue, then by Rica Matsumoto from episode 50 onwards. In the English dub, Bakura is voiced by Ted Lewis.
Dark Bakura (闇獏良 Yami Bakura?, Yami Bakura in the English anime) is a dark spirit dwelling inside of the Millennium Ring, much like Dark Yugi. This dark half of Ryo Bakura, Dark Bakura, intends to collect all of the Millennium items, and quite clearly does not care for anyone who might get in his way. His goal is to use them to open the Door of Darkness, which grants evil power to the one that opened it. To do so, he takes control over Ryo Bakura's body against Ryo Bakura's will, since he doesn't have a body of his own. In the beginning of the story, he torments Ryo Bakura by taking over his body whenever he played a game with his friends and used Penalty Games to trap their souls into TRPG miniatures for the Monster World game. Dark Bakurais voiced by Tsutomu Kashiwakura in the first series. In Duel Monsters he is first voiced by You Inoue, then by Rica Matsumoto from episode 50 onwards. In the English dub, Bakura is voiced by Ted Lewis.
Maximillion J. Pegasus, known in Japanese versions as Pegasus J. Crawford (ペガサス・ジェイ・クロフォード Pegasasu Jei Kurofōdo?), is the eccentric American Chairman of Industrial Illusions (shortened to I²) and the creator of the game Duel Monsters (Magic & Wizards (Ｍ＆Ｗ(マジックアンドウィザーズ) Majikku ando Wizāzu?) in the Japanese manga). He is the wielder of the Millennium Eye (千年眼, ミレニアムアイ Sennen Gan, Mireniamu Ai?). In the original manga, it's his story about meeting Shadi and the supposed "evil intelligence" of the Millennium Items that prompts Dark Yugi's search for the answer of who he is and where he came from. During his final Shadow Game with Yugi/Dark Yugi, he tells them of his discovery of an ancient Egyptian Shadow Game during his travels in the Valley of the Kings, which inspired his creation of Duel Monsters and the creation of card games in general, such as tarot cards. In the anime, as the creator of the card game Duel Monsters and the discoverer of their ancient Egyptian roots, Pegasus often plays a key role due to his extensive knowledge of the game and its mysterious origins. He has a habit of calling Yugi Mutou "Yugi-boy" and Seto Kaiba "Kaiba-boy" in the Japanese and edited English versions of the anime and manga. This trend continues in the Yu-Gi-Oh! GX anime, calling Jaden Yuki "Jaden-boy." Interestingly, in Japanese versions of the manga and anime, Pegasus often uses English words interspliced with Japanese, including English words like "goodness gracious!" and "snap!" and using the English pronoun "you" instead of Japanese second-person words. His speech is also unique in terms of pronunciation. In both English and Japanese he tends to elongate vowel sounds, especially near the end of a sentence.
Pegasus quickly establishes himself as the manga's fourth main antagonist (and the second anime adaptation's first main antagonist), challenging Yugi Mutou to a Shadow Game in order to force him to come to his tournament Duelist Kingdom (決闘者の王国（デュエリストキングダム） Dyuerisuto Kingudamu?) and face him, taking the soul of his grandfather Sugoroku Mutou as a Penalty Game for losing the timed match to ensure this. In the manga, Pegasus locked Yugi's grandfather's soul into a video tape, rather than actually stealing it. Throughout the battles to get to Pegasus's castle, Yugi is seen talking to his grandfather through the use of a camcorder. In the anime, he traps Sugoroku in a Soul Prison Duel Monsters card. Pegasus also kidnaps Mokuba Kaiba to convince his brother Seto Kaiba to come as well. Through a series of flashbacks, Pegasus is revealed to have had a lover, Cyndia (シンディア Shindia?, Cecelia in the English anime), who died just after their wedding (details regarding if they were actually married vary from medium to medium). In the manga, she died after her 17th birthday, before they even had a chance to get married. Pegasus is voiced by Jiro Takasugi in the original and by Darren Dunstan in the English adaptation.
Mr. Clown (クラウンさん Clown-san?, misspelled as Crown in the Japanese manga), also known as Otogi's father (御伽父 Otogi-chichi?) is an antagonist exclusive to the manga. He is the owner of the Black Clown (ブラック・クラウン Burakku Kuraun?) game shop across the street from Sugoroku Mutou's Kame Game shop. Long ago, Mr. Otogi asked Sugoroku Mutou, a master gamer, to take him in as a disciple. After a while, they challenged each other for the ownership of the Millennium Puzzle in a Shadow Game called the Devil's Board Game. Mr. Otogi, who lost, aged 50 years in a single night as a Penalty Game. Since then he desired revenge through his son Ryuji (known as "Duke Devlin" in the English adaptation of the anime version). In the English Dungeon Dice Monsters video game, he is given the name Sindin the Clown.
Marik Ishtar (Dark Marik)
Marik Ishtar (マリク・イシュタール Mariku Ishutāru?) in the original Japanese anime and manga, is a character in the manga Yu-Gi-Oh! and the second Yu-Gi-Oh! anime series (known in Asia as Yu-Gi-Oh! Duel Monsters). The heir to a clan of tombkeepers and the younger brother of Ishizu Ishtar, Marik's hatred of the nameless Pharaoh compels him to disregard his duties and turn to a life of crime, developing a split personality during his childhood after he underwent the tombkeeper's initiation ritual (which burned a key to the Pharaoh's memory on his back with a hot dagger) and was forever destined for a confined life in the darkness. Marik is voiced by Tetsuya Iwanaga in the original version and by Jonathan Todd Ross in the English adaptation, while Akiko Kimura does his voice in flashbacks
Priest Akhenaden (神官アクナディン Shinkan Akunadin?) was the guardian of the Millennium Eye and the brother of King Ahknemkhanen. As they grew up, he was secretly jealous of his brother's position as pharaoh, considering himself the true power behind the throne. Using the Shadow Alchemy inscribed in the Millennium Tome (千年魔術書 Sennen Majutsu Sho?, Millennium Spellbook in the English dubbed anime), he ordered the massacre at the village of Kul Elna, using their blood and melting their corpses into gold so he could create the Millennium Items to defend his brother's kingdom, keeping the slaughter a secret and brainwashing his soldiers in order to keep it that way. He is voiced by Hitoshi Bifu in the Japanese version of the anime. In the English adaptation, he is voiced by Pete Zarustica.
The Great Evil God Zorc Necrophades (大邪神 ゾーク・ネクロファデス Daijashin Zōku Nekurofadesu?) (Zorc the Dark One in the English anime) is a destroyer of worlds that was born when the Millennium Items were originally created (in the English anime, he is the creator of the Shadow Realm, and therefore likely predates the items, though they were made using his power, and in the manga he was said to be born of the darkness in humans' hearts).
He is summoned by Akhenaden by the power of the Millennium Items and attacks the kingdom, dispatching Atem's advisers. In the Memory World, a RPG-style Shadow Game that Dark Bakura has set up based on ancient Egypt, Zorc is the game's final boss and has three Ba gauges, and if Dark Yugi loses the Shadow RPG, Dark Bakura would gain the ultimate powers of darkness and Zorc would be effectively be summoned once again. However, with the help of Yugi and his other dear friends, Atem defeats him and stops him from being resurrected, also freeing Ryo Bakura from the Millennium Ring once and for all. In the original Yu-Gi-Oh! manga, it is said that Dark Bakura was an entity made of both Zorc and Thief King Bakura's souls, while in the Duel Monsters anime, it is said that the spirit within the Millennium Ring is entirely Zorc.
- Death-T (DEATH-T（死のテーマパーク） Theme Park of Death?, known as Doom-T in Yu-Gi-Oh! Destiny Board Traveler) is a deranged theme park created by Seto Kaiba in attempt to kill Yugi Mutou using deadly games, and hiring deadly opponents. These events do not happen in the second series anime.
- The Laser Tag Assassins were three professional mercenaries hired by Kaiba. This team was composed of Johnny Gale (ジョニー・ゲイル Jonī Geiru?, known as Charlie Gale in the English DDM video game), a former Green Beret commander, who specialized in guerrilla warfare, Bob Mcguire (ボブ・マクガイア Bobu Makugaia?, known as Bickford Gage in the English DDM video game), who was a former SWAT team leader and specialized in long distance sniping, and Mysterious Assassin (謎のアサシン Nazo no Asashin?, known as Name unknown in the English manga and Snipes Crosshair in the English DDM video game), who formerly worked as a hitman that succeeded in killing of all his targets when he was hired by KaibaCorp. Being offered ¥10,000 each for killing Yugi and his friends in the Shooting Stardust (シューティング・スターダスト Shūtingu Sutādasuto?) game, they were determined and were equipped with guns that fired real lasers that can cause fatal electric shocks, while Yugi and his friends were given toy guns.
- Kaiba's Butler (海馬邸執事?, known as Daimon (大門 ) in the anime series and Hobson in the English dubbed anime) was the guide of the Horror Zone in Death T-2. Before the grand opening of Kaiba Land, he welcomed Yugi Mutou and Katsuya Jonouchi to Kaiba Manor. He, along with other servants, greet them and Mokuba when they arrived. Mokuba got him to prepare six meals, including two poisoned ones for his rigged game of Russian Roulette Dinner with Yugi and Jonouchi. When the game backfired and Mokuba was poisoned, the butler came to his aid.
- The Chopman (チョップマン Choppuman?) is a serial killer that is in one of the traps at Death-T and is exclusive to the manga, not appearing in either anime series. One summer, at a camp near Domino Lake, Chopman murdered ten boy scouts who had been staying there, in a single night. He chopped their bodies into unrecognizable pieces. The news of the murders had all of Domino City in fear. The suspect came to be known as "The Chopman", but was not captured and remained at large.
- Mr. Crocketts (Mr.クロケッツ Misutā Kurokettsu?, known as Croquet in the English anime) is the right-hand man and butler of Pegasus. In the manga, he is taken hostage by Seto Kaiba, who punches him and holds Crocketts at gunpoint in the guestroom, threatening to snap Crocketts' neck in his briefcase if Pegasus doesn't show himself.
- Saruwatari (猿渡 Saruwatari?, known as Kemo in the English anime) is a character who is first shown working for the Kaiba Brothers as one of their private bodyguards during the Death-T arc. In actuality, he was working for Industrial Illusions the whole time, gathering information from within KaibaCorp and giving it to Pegasus. Saruwatari reappears in the Yu-Gi-Oh! R spin-off manga and makes an appearance in the 1998 Toei movie, where he kidnaps unwilling invitees to Kaiba's tournament. Jonouchi stops him from forcing Shougo Aoyama to enter. In the second series anime, he is voiced by Masahiro Okazaki and is voiced by Eric Stuart in the English adaptation.
- Player Killers (プレイヤーキラー Pureiyā Kirā?, known as Eliminators in the English anime) were hired by Pegasus to challenge the contestants to duels and take their Star Chips, in order to ensure that the gamers on his island do not succeed in making it to the finals of Duelist Kingdom, and therefore making Pegasus the number one duelist in the world fit to be KaibaCorp's new CEO. The first Player Killer that Yugi and his friends encounter is the Ventriloquist of the Dead (死者(ししゃ)の腹話術師 Shisha no Fukuwajutsūshi?), hired by Saruwatari, whose primary job is to defeat Yugi. In the second series anime, the Ventriloquist of the Dead is replaced by an obese shape-shifter called The Death Imitator (死の物真似師(しのものまねし) Shino Mono Maneshi?, known as Ghost Kaiba in the English anime). The second Player Killer that the group encounters is the Player Killer of Darkness (「闇」のプレイヤーキラー "Yami" no Pureiyā Kirā?, known as PaniK in the English anime) who steals Mai Kujaku's star chips. The last set of Player Killers the group meet is within the underground maze of Duelist Kingdom called the Meikyū Brothers (迷宮兄弟 Meikyū Kyōdai?, known as the Paradox Brothers in the English anime), who challenge Yugi and Jonouchi to a tag-battle game, a hybrid of Duel Monsters and a maze game. After losing, the group needed to choose the correct path, or else they would be stuck in the underground labyrinth for eternity. In reality, both doors are correct and the brothers are able to change the correct door at will. Their trickery is outed by Dark Yugi's Labyrinth Coin (迷宮コイン Meikyū Koin?) game, with the aid of Dark Bakura in the manga, and the groups heads on out to the surface.
- Ghouls (グールズ Gūruzu?, Rare Hunters in the English anime; Jackals in some video games) are a group of card thieves that serve Marik. By stealing and selling rare cards from duelists worldwide, the Ghouls provide Marik with a large supply of minions, rare cards and money. Numerous members of the Ghouls are shown, the unnamed card shop owner, the Rare Hunter (レアハンター Reahantā?, Seeker in the English anime), Pandora (パンドラ?, Arcana in the English anime), the Pantomimer (パントマイマー Pantomaimā?, Strings in the English anime), Mask of Light (光の仮面 Hikari no Kamen?, Lumis in the English anime) and Mask of Darkness (闇の仮面 Yami no Kamen?, Umbra in the English anime), and various other unnamed duelists. The first Ghoul, Seeker , was informed by the card shop owner that gave Jonouchi his Duel Disk that Jonouchi owned the rare Red-Eyes Black Dragon. The second Ghoul, Pandora, challenged Dark Yugi to a death game, in which their legs are shackled and buzzsaws threaten to saw off the loser's legs once their life points reach 0 (in the English anime, the loser will be sent to the Shadow Realm). The third Ghoul, Pantomimer, first appears before Bakura, Anzu, and Yugi's grandfather standing stationary in the park, and Bakura tries to get his attention, stating in his head that he doesn't feel any life from him, as if he was a doll. The last set of Ghouls are Mask of Light and Mask of Darkness. They challenge Dark Yugi and Kaiba to a tag-team death game where the loser sets off a bomb near their side of the glass ceiling, falling 13 stories to their death.
- Gozaburo Kaiba (海馬 剛三郎 Kaiba Gōzaburō?) is a rich, selfish, cold-hearted, uncaring and power-hungry tyrannical and powerful business man who is the adoptive father of Seto and Mokuba Kaiba. Gozaburo is the original founder and CEO of Kaiba Corporation, which initially began as a successful arms manufacturer, and a world famous chess champion. It was this particular skill that Seto appealed to when Gozaburo visited the orphanage where he and Mokuba were living, as he challenged Gozaburo to a game of chess, with the stakes being the adoption of the two brothers. Seto won (in the manga, it is stated that he cheated), and Gozaburo adopted Seto and Mokuba, but proved a cruel father, forcing Seto to spend all his time studying in order to groom him as his new heir. Gozaburo's plans backfired, however, when he gave Seto a 2% share of KaibaCorp stock as a test, challenging him to pay back ten times the amount within a year. Seto managed to acquire the money within a single day, and together with the board of director, secured majority control of the company stocks, overthrowing Gozaburo and installing himself as the new CEO of KaibaCorp. Gozaburo commits suicide by defenestration upon being dethroned. In the first anime adaptation, instead of committing suicide as he did in the manga, he instead suffered a heart attack when Kaiba took over KaibaCorp. In the Duel Monsters anime adaptation, his story is greatly altered, making him the major antagonist of one of the anime's filler arcs. In the Japanese versions, Gozaburo is voiced by Unsho Ishizuka in the Toei anime, and by Tetsuo Komura in Duel Monsters series. In the American English dub of Duel Monsters, he is voiced by David Willis.
- Noah Kaiba (海馬 乃亜 Kaiba Noa?) is Gozaburo Kaiba's biological son, and Seto and Mokuba's stepbrother. Noah does not appear in the manga and his role is exclusive to the Yu-Gi-Oh! Duel Monsters anime series, specifically of the Virtual World story arc. As the heir to Kaiba Corporation, Noah's father makes him study heavily in the arts and academic subjects, but unlike Seto Kaiba, Noah enjoys it and is eager to please his father. When Noah is approximately ten years old, he is in a car accident and is fatally injured. In the hope of saving his son, Gozaburo Kaiba uploads Noah's mind onto a supercomputer just before Seto is adopted. He is voiced by Chisa Yokoyama in the Japanese version and by Andrew Rannells in the American/English dub.
- Dartz (ダーツ Dātsu?) is the former King of Atlantis and the head of the organization Paradius. After being forced to kill his wife who had been turned into a monster by the orichalcos, Dartz was himself corrupted, turning his right eye green. Dartz led the forces of the Orichalcos against his father, daughter and the forces of the Dominion of the Beasts, but was defeated. Dartz then spent the next ten thousand years collecting souls to revive the Leviathan, which he felt could be easily revived using the soul of Pharaoh Atem. He is voiced in the English version by Wayne Grayson and in the Japanese original by Yuu Emaou.
- The Three Swordsmen are the three henchmen that serve under Dartz's orders. Amelda (アメルダ Ameruda?), Alister in the English dub, is Dartz's second henchman. Amelda lived in a town in the middle of a war as a child, leading a resistance group with his brother after their parents disappear. Raphael (ラフェール Rafēru?), Rafael in the English dub, is the strongest of Dartz's henchmen and is the duelist meant to defeat Atem and Yugi Mutou. Raphael once had a family that was killed while on an ocean cruise, leaving him stranded on an island (in the English version, the family was still alive, but have completely forgotten about him). With only his dueling deck to keep him company, Raphael developed a deep bond with them before he was rescued. Valon (ヴァロン Varon?) is Dartz's third henchman. Abandoned at a young age, Valon was cared for by a nun at a church and protected him from a local street gang. However, when the nun was killed in a fire and the church burned down, Valon assaulted the gang and was sent to juvenile prison.
- Siegfried von Schroeder (ジークフリード・フォン・シュレイダー Jīkufurīdo fon Shureidā?), Zigfried von Schroeder in the English dub, is the CEO of Schroeder Corp, a long-time rival to the Kaiba family and Kaiba Corporation. When Siegfried and Seto Kaiba become heads of their respective family companies, both of them attempt to create holographic systems for Duel Monsters. Both succeed, with Siegfried's invention being the Holographic Duel Box Room System, but Kaiba markets and patents his first, leaving Siegfried to fall into ruin. In the anime, Siegfried joins the KC Grand Championship to discredit Kaiba and claim revenge. Although Siegfried uses a variety of computer viruses to attempt to destroy Kaiba Corporation's computer systems, Kaiba is able to halt them all and expels Siegfried from the tournament.
- Appearing only in the Pyramid of Light film based on the Duel Monsters anime series, Anubis (アヌビス Anubisu?) wants revenge on Yami Yugi and awakens after Yugi Mutou solves the Millennium Puzzle. Pharaoh Atem had defeated Anubis a long time ago, yet Anubis re-appears to face Yugi Mutou. Anubis possesses the cards Andro Sphinx and Sphinx Teleia, which can be merged into Theinen the Great Sphinx. In the Japanese version of the movie, Anubis wants revenge by using the King of Light (Kaiba) to defeat the King of Darkness (Dark Yugi) in order to revive Anubis, the King of Destruction, and then use Kaiba to become the new king and rule the world. However his plan is cut short by Yugi and he is finally killed by Blue-Eyes Shining Dragon. Since he has never been shown or referenced in the manga or Duel Monsters anime, he is considered a non-canon character to both continuities (Kazuki Takahashi designed Anubis, but never used him in the manga). Anubis is voiced by Scottie Ray, and by Kouji Ishii for the Japanese version.
- Appearing only in the crossover film for the Duel Monsters universe, and the second part of Yu-Gi-Oh! 5D's: Season 4 (in a flashback), Paradox (パラドックス Paradokkusu?) is a Turbo Duelist who travels across time and space to face Yugi Mutou, Jaden Yuki and Yusei Fudo. He appears in the Yu-Gi-Oh! 3D: Bonds Beyond Time who is trying to destroy the history of Duel Monsters in order to save his own time, but ends up causing more damage to the time-line than expected. Paradox is voiced by Atsushi Tamura and Sean Schemmel in the English dub.
Seto Kaiba (海馬 瀬人 Kaiba Seto?). In the early manga, Seto discovers that the grandfather of his classmate, Yugi Mutou, owns the rare "Blue-Eyes White Dragon" card. Kaiba steals the card from Yugi by switching it with a fake copy. Yugi recognizes the card for a fake and duels Kaiba to get it back. Yugi, Honda Hiroto and Katsuya Jonouchi were beaten up by Kaiba's guards until the Darker Yugi from within the Millennium Puzzle confronts Kaiba and challenges to a Shadow Game with the card as a prize. Although Kaiba nearly wins, the magical nature of the game prevents the stolen Blue-Eyes from obeying him, and Kaiba is defeated, suffering a temporary Penalty Game—an illusion of being mauled by monsters. In Toei's anime adaptation, he is voiced by Hikaru Midorikawa. In NAS/Gallop's Duel Monsters anime adaptation, he is voiced by Kenjirō Tsuda and Kiyomi Yazaki as a child. In the English dub of the latter, Kaiba is voiced by Eric Stuart.
Mokuba Kaiba (海馬 モクバ Kaiba Mokuba?) is Seto Kaiba's younger brother. In the manga, Mokuba is characterized as a spoiled brat, always trying to trick Yugi Mutou to get back at him for defeating his older brother. In the pre-Death-T chapters of the manga, Mokuba tries to defeat Yugi before Kaiba has a chance to and challenges Katsuya Jonouchi and Yugi to a Russian Roulette Dinner (死の料理・ロシアンルーレット Shi no Ryōri Roshianrūretto?) and poisons Jonouchi. In the second series of the anime, Mokuba is eternally devoted to his brother Seto Kaiba and is constantly by his side. He is not as violent as his manga counterpart, and is not committed to avenge Seto's defeat. He befriends Yugi's group after they rescue him, thus making him the warmer, more sociable one of the two brothers. In the Toei anime series, he is voiced by Katsue Miwa. In Duel Monsters, Mokuba is voiced by Junko Takeuchi and by Tara Sands for season one to four then by Carrie Keranen from season five onwards in the English adaptation.
Sugoroku Mutou (武藤 双六 Mutō Sugoroku?, Solomon Mutou in the English anime, Sugoroku Muto in the subtitled English anime and the Yu-Gi-Oh!: The Movie Animanga) is the grandfather of Yugi Mutou, who gave him his famous Millennium Puzzle as a present, which he had recovered from the tomb of Pharaoh Atem in his youth. He owns the Game shop, where Yugi and his friends get several of the games they play. In the second series anime adaptation, he taught Joey Wheeler how to play the Duel Monsters card game. Similar to his grandson, his fondness for games is evident even in his name: "Sugoroku" is a Japanese game similar to Backgammon. Sugoroku is the reincarnation of Ancient Egyptian vizier, Siamun Muran, right hand man to the Pharaoh Atem.
Sugoroku is voiced by Takeshi Aono for the Toei anime series, Tadashi Miyazawa for the second series in Japanese, while Maddie Blaustein handled his voice for the English adaptation, with Marc Diraison voicing him for Episode 199. Following Blaustein's death in 2008, Wayne Grayson provided his voice for Yu-Gi-Oh! 3D: Bonds Beyond Time.
Ryuji Otogi (御伽 龍児 Otogi Ryūji?, Duke Devlin in the English anime) is a talented game inventor and is also the creator of Dungeon Dice Monsters (Dragons, Dice, & Dungeons (D·D·D(ドラゴン・ダイス・＆(アンド)ダンジョンズ) Doragon Daisu ando Danjonzu?) in the manga). According to his father, Mr. Clown, Ryuji was born in order to fulfill his father's revenge on Sugoroku Mutou. Sugoroku had defeated Mr. Otogi in a Shadow Game called the Devil's Board Game, causing him to age 50 years in one night as a Penalty Game. Ryuji was transferred to Domino High School, where Yugi Mutou (Sugoroku's grandson) goes to school. His father used this as an opportunity for Ryuji to defeat Yugi in a series of games and fulfill the family's revenge.
In the Japanese versions, his personality change between the manga and anime is apparent in his use of boku (僕?, polite male pronounce for I) in the anime as oppose to ore (俺?, masculine and boastful pronoun of "I") in the manga.
Shadi (シャーディー Shādī?) is the first Millennium Item wielder to cause trouble for Yugi and his friends in the story, serving as the main antagonist for the Trial of the Mind arc of the manga. He holds the Millennium Key (千年錠 Sennen Jyō?, also known as the Millennium Ankh), which allowed him to peer into the inner souls of humans and gave him the ability to rearrange their personality as he pleased, and the Millennium Scales (千年秤 Sennen Bakari?), which had the power to weigh the evil in a person's heart in the same vein as Anubis's "Weighing of the Heart" trials in Egyptian mythology, using the feather of Ma'at. In the second series anime, his ownership of the Scales isn't revealed until the last arc. In the Toei anime, he is voiced by Kaneto Shiozawa. In the Duel Monsters anime, he is voiced by Nozomu Sasaki.
Ishizu Ishtar (イシズ・イシュタール Ishizu Ishutāru?) is a character in the manga Yu-Gi-Oh! and the second series Yu-Gi-Oh! anime (known as Yu-Gi-Oh! Duel Monsters in Asia). Marik's elder sister, Ishizu became a museum curator in order to lure Yugi Mutou and Seto Kaiba to her in order to keep Marik from fulfilling his goals. To aid her, she holds the Millennium Tauk (千年首飾り Sennen Tauku?, known as the Millennium Necklace in the English anime) that has the power to foresee events in the near future. She is voiced by Sumi Shimamoto in the Japanese version and in the flashbacks she is voiced by Sakura Nogawa. In the English adaptation she is voiced by Karen Neil.
Rishid Ishtar (リシド・イシュタール Rishido Ishutāru?, Odion Ishtar in the English anime) is Marik's adoptive brother and the second-in-command of the Ghouls. Abandoned as a child, Rishid was taken in by Marik's mother prior to his birth. However, his father never accepted him as a suitable heir and treated him as a servant rather than a son. Despite this, Rishid had always desire to become a true part of the family and an heir to the tombkeeper clan. When Marik was born, his mother told him to take care of his younger brother and Rishid stood by Marik's side, even when he turned to a life of evil. Marik and Rishid were close siblings, but Rishid always harbored a resentment for him as the true heir to the tombkeeper's clan and legitimate son of his parents. When Marik was bitten by a cobra and became ill, their father beat Rishid, furious he allowed Marik to be harmed, and ordered that he not leave Marik's bedside until he recovered. Rishid takes a dagger to Marik's room with the intent to kill him in his sleep (this is edited out in the dub, along with Rishid's resentment for Marik). Marik awakens and murmurs "brother", causing Rishid to drop the weapon in shock: Marik sees Rishid as his brother, despite the fact they are not blood related. In the English adaptation he is voiced by Michael Alston Bailey. He is voiced by KONTA in the Japanese version. In the flashbacks, he is voiced by Sakura Nogawa.
Mai Kujaku (孔雀 舞 Kujaku Mai?, Mai Valentine in the English anime) is an attractive woman who spent most of her life alone. While working as a blackjack dealer on a cruise ship, she developed a cynical attitude towards people and showed no shame in manipulating men, who displayed foolish infatuation towards her and previously used her "Aroma Tactics" to easily beat them in card games. Although she made a lot of money doing this, it caused her to hate people more until she got sick of her job and quit. She became a powerful, successful duelist thanks to her Harpie-themed deck. However, Mai had no true friends, and dueled simply for pride and monetary gain, but also entered the Duelist Kingdom tournament to find the things she used to cherish. When Mai joined the Duelist Kingdom tournament to seek the prize money, she met Yugi Mutou and his friends and steadily forged a true friendship with them after they rescued her Star Chips from the Player Killer of Darkness to help her stay in the tournament. Mai subsequently faced Yugi in the semi-finals, but ultimately chose to surrender to him when she decided she could not win, telling him that some losses only serve to make people stronger. In the anime, she was raised in a wealthy household, but was barely acknowledged by her relatives.
In the 4Kids version, Mai's past as a blackjack dealer was omitted and both she and her Harpie Ladies' appearance were censored to remove sexual references. Mai is voiced by Haruhi Terada in the Japanese series and originally by Megan Hollingshead, then Bella Hudson (Season 4) for the English adaptation, and finally Alyson Johnson for the 4Kids Uncut adaptation.
Shizuka Kawai (川井 静香 Kawai Shizuka?, Shizuka Jounouchi (城之内静香 Jōunouchi Shizuka in the 1st series anime,?) Serenity Wheeler in the English anime) is the little sister of Katsuya Jonouchi, separated from him when their parents divorced and her mother took custody of her. When Shizuka was diagnosed with the steady onset of blindness, Jounouchi entered the Duelist Kingdom tournament and successfully obtained the prize money to secure the operation that would save her eyesight.
Rebecca Hopkins (レベッカ・ホプキンス Rebekka Hopukinsu?, Rebecca Hawkins in the dub) is a character created exclusively for the second series anime. She is the cute 8-year old granddaughter of a friend of Sugoroku Mutou, believing Sugoroku stole the Blue-Eyes White Dragon card from him. Dueling Sugoroku's grandson Yugi to get it back, Rebecca and Yugi play a game identical to the one Sugoroku played with Rebecca's grandfather years ago. After Yugi surrenders, Rebecca's grandfather explains he gave Solomon his card as a gift. Yugi, then hands Rebecca the "Ties of Friendship" card that he won at Duelist Kingdom as a token of his appreciation.
During the Millennium World story arc, Dark Yugi journeys into his lost memories and meets old acquaintances from Ancient Egypt as NPCs (non player characters) within Dark Bakura's ultimate tabletop role-playing game, the Shadow RPG (闇のＲ・Ｐ・Ｇ Yami no Ā Pī Jī?), a campaign based on the past. The Six High Priests (六神官 Roku Shinkan?) protect the seven Millennium Items with their lives and have to swear eternal loyalty to the Pharaoh, Atem (serving as the player character of Dark Yugi, Atem's spirit in modern times). In the age where Shadow Games were used to determine a person's fate, these Priests used the Millennium Items and sorcery to pull out and seal human souls (Ka), which take the form of Monsters Spirits, into stone slabs to do battle; usually from criminals and those who pilfer from the tombs of the Pharaohs. Within the RPG, each characters' health and magic were represented by their Ba Gauge.
Priest Seto (神官セト Shinkan Seto?) is one of the seven High Priests that guard the Millennium Items and is the holder of the Millennium Rod. Priest Seto is named after the god Set and is actually the first cousin of Pharaoh Atem. Seto Kaiba is his reincarnation and thus, resembles him in looks and basic attitude, believing in power and brute strength. However, Priest Seto appears to bear a great loyalty and friendship to Atem, as opposed to Kaiba, who views modern day Yugi Mutou as a lifelong rival as opposed to someone he calls a friend. Before the Battle City arc, a tablet showing Priest Seto fighting Pharaoh Atem was on display at the Domino City Museum, with Blue-Eyes White Dragon fighting against the Pharaoh's Dark Magician. During Battle City, Kaiba continuously has vivid visions of his past life as Seto. Priest Seto appears as an NPC in the Shadow RPG, aligned to Dark Yugi's side of the board. Seto is voiced by Kenjiro Tsuda in the Japanese version.
Priest Mahado (神官マハード Shinkan Mahādo?, known as Mahad in the English anime) was a loyal High Priest of Pharaoh Atem's court and appears as an NPC within Dark Bakura's Shadow RPG. He bears the Millennium Ring, but lost the item to Thief King Bakura in a Shadow Game. He states that he had sensed an evil intelligence within the Millennium Ring, which it absorbed from the previous priest who wore it. His Monster Spirit Ka is the Magus of Illusion (幻想の魔術師 Gensō no Majutsushi?, known as the Illusion Magician in the English anime), a spellcaster.
Priest Isis (神官アイシス Shinkan Aishisu?) is a loyal priestess that serves Pharaoh Atem in Ancient Egypt and wields the Millennium Necklace. Ishizu Ishtar is the reincarnation of Isis. She is named after the Egyptian goddess Isis. Voiced by Sumi Shimamoto in the Japanese version.
Priest Karim (神官カリム Shinkan Karimu?) is one of the six High Priests that served under Pharaoh Atem in Ancient Egypt 3000 years ago during his reign, and was the owner of the Millennium Scales at the time. He appears as an NPC aligned with Dark Yugi in the Shadow RPG. Voiced by Masahito Kawanago in the Japanese version.
Priest Shada (神官シャダ Shinkan Shada?) is one of the six priests that guarded Pharaoh Atem 3,000 years ago and appears as an NPC in the Shadow RPG. He is the keeper of the Millennium Key during Atem's reign. He appears to have a friendship with Priest Seto, and although he was relunctant, Shada aided Seto in his criminal hunt for Monster Spirit Ka with his Millennium Key. He later dies after pushing Atem out of the way of a lightning bolt caused by Zorc Necrophades, having his Ba Gauge wiped out (in the English version of the anime, he is sent to the Shadow Realm). After his death, Siamun, his predecessor, took back the Millennium Key in order to called forth Exodia the Sealed One. Although he is the wielder of the Millennium key and has a similar name to Shadi, the two are not related in any way. Voiced by Sumi Shimamoto in the Japanese version and Sakura Nogawa when he was young.
Siamun Muran (シモン・ムーラン Shimon Mūran?, known as Shimon in the English anime) is a vizier of Pharaoh Atem. He resembles Yugi's modern day grandpa, Sugoroku Mutou. He was originally one of the Pharaoh Akhenamkhanen's original guardians and was the former keeper of the Millennium Key, the predecessor to Shada. He was voiced by Tadashi Miyazawa in the Japanese version.
Mana (マナ Mana?) is a childhood friend of Atem and studies magic under Mahado as his apprentice. She is a light-hearted, open, playful and caring girl, who shares a deep bond between her master and Atem; the anime shows all three were childhood friends. She appears in the Millennium World arc as an NPC during Dark Bakura's Shadow RPG game. Her Ka is the Dark Magician Girl. In the anime, she can see Atem's friends from the present and initially mistakes Yugi for him. Voiced by Yuki Nakao in the Japanese version.
Kisara (キサラ Kisara?) is the keeper of the Blue Eyes White Dragon Monster Spirit in the Millennium World arc. Her pale appearance is unusual, and she is mentioned as being from a "foreign country" in the Japanese anime. In the second series anime adaptation, it's stated that as children, Priest Seto saved Kisara from slave traders, and she repaid him by unconsciously releasing her inner dragon spirit after the traders set fire to his village and killed his mother. Years later (their first meeting in the manga), Seto again stumbles across Kisara being stoned because of her pale white skin, deep blue eyes and snow white hair. Shada senses the immeasurably strong strength and power within her — which he deems "equal to that of the Gods" — and Seto takes her back to the palace, where he recognizes her as the girl he once saved some years ago. Kazuki Takahashi has said that he originally planned for the story to have much further explored the strong romantic relationship between Seto and Kisara, but in order to meet a deadline these details had to be cut. According to Takahashi, Priest Seto's strong romantic feelings for Kisara are the main basis behind Kaiba's modern-day unusually strong obsession with the Blue-Eyes White Dragon card.
Kisara is voiced by Rie Nakagawa in the Japanese version.
In the manga, Bobasa (ボバサ Bobasa?) is a member of an Egyptian tombkeeper clan that protects the Millennium Items under the command of Shadi. He has Shadi's Millennium Scale as well as his Millennium Key. Bobasa protects the items by placing them on his abnormally-shaped chest and locking his clothes. He then swallows the key, and is able to regurgitate it at will. He accompanied Yugi and his friends into the Millennium Puzzle's maze, a continuation of the Labyrinth Treasure Hunt from the early manga, in order to find the true door to the king's memory. He later enters the Memory World with Yugi and his friends and becomes an NPC in the Shadow RPG. In the manga, it is revealed that he is actually Hasan, which in turn, means that he is actually Shadi.
In the Duel Monsters anime version, his role and character are completely altered. Bobasa appears as a comic relief NPC that inhabits the Shadow RPG. He is a key switch that can lead the player to where the Pharaoh's name is if the player gives him enough food to eat. It is never fully explained to who and what he actually is, but it's implied that he could have been a genie or some other supernatural entity because he said that now that he's full, he can "grant your wish." When he finally took them to the Pharaoh's tomb, he vanished and seemed to know a lot more about the situation then he was first implied to. Unlike the manga, Bobasa is not an alternate identity of Shadi.
- Ushio (牛尾?, Demetrius in the English DDM video game) is a hall monitor at Domino High School who offers a paid bully protection service to Yugi after he is bullied by Jonouchi and Honda. Although Yugi refuses, denying that he has been bullied, Ushio beats up Jonouchi and Honda and demands that Yugi pay him a fee of 20,000 yen (about $230 American currency). In the first version of the Japanese Yu-Gi-Oh! anime, he is voiced by Ryuzaburo Otomo. In the second version, he is voiced by Yuji Kishi. In the English adaptation of the second anime, he is voiced by Dan Green.
- The ZTV Director (ＺＴＶディレクター Zetto Tī Vi direkutā?, known as Director Lucius in the English DDM video game) is a minor villain exclusive to the original manga, appearing in the second chapter.
- Tomoya Hanasaki (花咲友也 Hanasaki Tomoya?, known as Lint Greendale in the English DDM video game) is a friend of Yugi in the early chapters of the manga, and does not appear in either anime series. He becomes friends with Yugi after Dark Yugi defeated Sozoji, who was bullying him, in a Shadow Game. Tomoya is obsessed with the American superhero, Zombire (ゾンバイア Zonbaia?). Before the start of the series, Hanasaki spent some time in hospital. When his father came to visit, he gave Tomoya a Zombire figure, telling him that this is Zombire and he's the strongest hero in America. Holding the figure, Hanasaki said he felt stronger too. His father was delighted to hear this and promised to bring him more Zombire toys and figures every time he came home from America.
- Sozoji (騒象寺（そうぞうじ） Sōzōji?, known as Fender Shrill in the English DDM video game) is a karaoke player who tries to get people to listen to his horrid singing. He's a minor villain exclusive to the original manga. Sozoji forced Yugi and Tomoya Hanasaki to sell tickets to his All Night Solo Live Show. When Yugi discovered that Hanasaki was also asked to sell tickets, he offered to take charge of selling all the tickets, so only one of them would have to suffer. Sozoji discovered the exchange and beat-up Hanasaki. Yugi arrived at the show, not having sold any tickets. Sozoji then forced Yugi to listen to his music at a deafening volume and brought out Hanasaki, who was badly beaten, as the audience for the next act.
- Prisoner Number 777 (囚人ナンバー777 Shūjin nanbā 777?, known as Jackpot in the English DDM game) is a convict who escaped from Domino City Jail with a stolen handgun after killing a guard. In the first series anime, he is called Jiro the Spider (女郎蜘蛛のジロウ Jorōgumo no Jirō?) and is actually the manager of the Burger World restaurant (differing in appearance with his manga counterpart), framing Tetsu Sasaki (ササキテツオ Sasaki Tetsu?), a common thief who resembles the manga's Prisoner Number 777. Jiro the Spider is voiced by Mahito Ohba. Tetsu Sasaki is voiced by Nobuyuki Hiyama.
- Kokurano (孤蔵野 Kokurano?, known as Fortuno in the English DDM video game) is a character that appears in the manga and first series anime. He is a self-proclaimed psychic in Class 1-A of Domino High School. Kokurano predicted a fellow student's house would catch fire. The prediction came true 3 weeks later, causing Kokurano to become famous at school. In actuality, Kokurano himself had set the student's house on fire. In the first series anime Kokurano has a slight dislike for Miho Nosaka because she won't get a prediction from him, for, in his words, she "mocks life with her complete innocence". He is voiced by Shigeru Chiba.
- Goro Inogashira (猪頭吾郎 Inogashira Gorō?, known as Kreiger in the English DDM video game) is a minor villain exclusive to the original manga. He was the senior class D festival committee president of Domino City High.
- Miho Nosaka (野坂 ミホ Nosaka Miho?, Melody in the English DDM video game) is a classmate of Yugi and his friends, the shy student librarian of the school, nicknamed "Ribbon" for the yellow ribbon she wears in her hair. She has only a small role in the original manga, where Hiroto Honda has a crush on her and attempts to pass a love note to her in the form of a jigsaw puzzle. The puzzle is intercepted by the wicked teacher Miss Chono, but her attempts to embarrass Honda are foiled by Yami Yugi. Unfortunately, when Honda asks Miho out directly, she turns him down flat. Despite this, Honda becomes friends with Yugi, eventually joining the group.
- Ms. Chono (蝶野先生 Chōno-sensei?, known as Miss Lynn Medusa in the English DDM game) is a villain from the manga and first series anime. She is known as the Lynn, The Expelling Witch (退学魔女リン Taigaku majo Rin?), since she expelled fifteen students over the course of six months, thus earning her the nickname. Her beautiful appearance is due to the immensely thick layer of make-up she wears, which covers her true, ugly face. She also enjoys dating, but the part she likes the best was to dump the men to see them cry and she actually considers it to be a hobby. She is voiced by Masako Katsuki.
- The Junky Scorpion Owner (ジャンキースコーピオンのオーナー Jankī Sukōpion no Ōnā?) was a minor villain exclusive to the manga. He was a character who tried to con Jonouchi out of a pair of Air Muscle shoes he bought. After Yugi Mutou found out about the owner's con, he changed to Dark Yugi and confronted the owner. The owner did not want Yugi to leave the store, knowing his secret, so he hid his scorpion in one of the shoes as he gave it back, hoping to poison Dark Yugi.
- Hirutani (蛭谷 Hirutani?, known as Diesel Kane in the English DDM video game) is a leader of a gang of extortion committing teenage thugs from Rintama High School and an old associate of Jonouchi. uring middle school, Hirutani hung out with Katsuya Jonouchi as part of a gang, who would spend their time picking fights with gangs from other schools, even high schools. After middle school, Hirutani went to Rintama High School, while Jonouchi went to Domino High School.
- Kanekura (金倉 Kanakura?, known as Adriel Wainwright in the English DDM video game) was the curator of Domino City Museum, who exhibited the Millennium Puzzle after Yugi Mutou agrees to let him exhibit it for one day. In the anime, he is voiced by Shin Aomori.
- Professor Yoshimori (吉森博士 Yoshimori-hakase?, known as Professor Jeremy Harrison in the English DDM video game) is a Domino University professor who is into archaeology and a friend of Sugoroku Mutou. Yoshimori has a wife and son, but neglected them in favor of his work. In the first series anime, he does not take part in Shadi's Shadow Game, and is instead thrown out of the museum window and hospitalized. He was voiced by Akio Nojima.
- Kujirada (鯨田 Kujirada?, known as Beluga in the English DDM video game) is a snobby classmate of Yugi's at Domino High School in the manga and first series anime. He causes trouble with his aggressive Digital Pet (デジタル・ペット Dejitaru petto?), named Devil Master in the first series anime. In the first series anime, Kujirada was bullied and manipulated by Haiyama. After losing to Honda's Digital Pet, Haiyama punishes Kujirada by whipping him. Dark Yugi saves Honda, Miho, and Kujirada by challenging Haiyama to a Digital Pet Shadow Game. Kujirada is voiced by Shouzou Iizuka.
- Street Fighter (ストリートファイター Sutorītofaitā?, known as Feng Long in the English DDM video game and Dragon 1 in the first series anime) was a boy who beat up Yugi over a losing streak of Virtual VS with both of them using the character of Bruce Ryu (based on their favorite martial artist, Bruce Lee), stealing his Millennium Puzzle in both the manga and the first series anime. Jonouchi found out what happened afterwards and chased down the street fighter to get back the Puzzle.
- Johji (ジョージ Jōji?, known as Cedric in the English DDM video game) is a manga-exclusive character, who is Honda's baby nephew, the son of his big sister. A big fan of Seto Kaiba, he forces Honda to take him to the opening of Kaiba, where Honda witnesses Yugi's grandfather being dealt an artificial Penalty Game by Kaiba and decides to accompany Yugi in Kaiba's Death-T challenge. Johji is recognizable for wearing a duck costume. The baby, an admirer of Kaiba, is lecherous towards Anzu and other females which is played for comedy relief, and spews curse words at times. He calls Honda by his given name, Hiroto, and seems to dislike him and his male friends. He accompanies the group during the Death-T arc and actually proves to be somewhat helpful in a couple of Kaiba's deadly attractions, if not a bit treacherous and a burden.
- Tsuruoka (鶴岡 Tsuruoka?, known as Anton Periwig in the English DDM video game) is the guidance counselor of Domino High School and a minor villain exclusive to the manga. He tends to abuse his position as a teacher to be unfair to the students. Tsuruoka mocked the low achievement test grades of Yugi, Jonouchi, and Honda to their peers as punishment for playing the Achievement Test Bingo Game while having low test scores. Tsuruoka then snatched the Lovely Two (ラブリー二号 Raburī ni-gō?) keychain Anzu had given to Yugi as a gift, from Yugi's pocket, citing that students are not allowed to bring games to school.
- The ZTV Producer (ZTVプロデューサー Zetto Tī Vi Purodyūsā?) is a selfish corrupt executive of the television studio, ZTV. He takes advantage of underprivileged people to boost ratings and cheats his way out of giving away prize money. He was a producer of the TV game show, The Get the Million Game Show (100万円!!ゲームDEゲット・ショー 100 Man-en! Gēmu DE Getto shō?, Get a Million Yen Show). He was pleased to find out that Katsuya Jonouchi, who was poor and trying to pay off his father's gambling debts, would be on the show. He thought that the audience would love to see a poor person struggling, and would love it even more to see him fail at the last minute. He and a technician tried to rig the final stage of the game, to prevent Jonouchi winning the prize money. This was to be done by pressing a button, which would prevent the wheel in the final game from stopping on the ¥1,000,000 (about $10,000 U.S. at the time) section. The button was colored red to distinguish it from the other buttons on the switchboard. Yami Yugi's attempt to punish him ends up backfiring; Jonouchi didn't get the prize money regardless.
- Koji Nagumo (名蜘蛛コージ Nagumo Kōji?, known as Stringer in the English DDM video game) is a minor villain first appearing in the original manga. In the manga, Nagumo asks Yugi to play Monster Fighter (モンスター・ファイター Monsutā Faitā?) with him while at Domino High School. While playing, Nagumo hits Yugi and takes his gun and monster, Alti. Nagumo tries selling Alti and other Monster Fighter figures and guns he's collected for ¥30,000 each (about $278 USD at the time). Dark Yugi comes into his store and fights Nagumo and his Wild Spider with Katsuya Jonouchi's monster, Killer Emaada (which the normal Yugi had asked to borrow before handing control over to Dark Yugi). As the game was a Shadow Game, Nagumo's face was cracked in the first set, which went to Dark Yugi; the Shadow Game dictated that the players, instead of the monsters, get damaged in the game. In the second set, Nagumo cheats by kicking Dark Yugi in the side. Enraged, Dark Yugi raised the Shadow Game's mode to "level three". When Nagumo tries to cheat again, his legs are held down by all of the monsters, including his own, and Nagumo saw, to his horror, the monster on his field was his own soul, composed of the Wild Spider's body, but his own face. Dark Yugi then dealt the death blow, piercing the representation of Nagumo's soul, purging it of the darkness.
- Playing Card Bomber (トランプ爆弾魔 Toranpu Bakudan Ma?, Trump Bomber, known as Tick-Tock in the English DDM video game) is a nickname for a man who sets off a string of bombs in Domino. The bomber's third attack at the Domino Mall kills eight people. His fourth bomb threat puts Anzu's life in danger. In the manga, Dark Yugi saves her life by playing Clock Solitaire (時計（クロック）カード・ゲーム Kurokku kādo gēmu?) without getting four threes. Afterwards, Dark Yugi reveals where the bomber was to the chief of police, leading to his arrest.
- Imori Hajime (井守はじめ Hajime Imori?, known as Damien Draco in the English DDM video game) is a student at Domino High School. Withdrawn and somewhat shy, Imori is then revealed to be anti-social and selfishly vindicated (akin to being Yugi's own evil counterpart), eventually uncovering the secrets of Yugi's Millennium Puzzle. He decides to usurp Yugi Mutou from his position of the "guardian of darkness" by challenging Yugi to a game of Dragon Cards (龍札（ドラゴン・カード Doragon kādo?), a forbidden Chinese Shadow Game, which his grandfather found while in Manchuria in World War II. Imori is voiced by Megumi Urawa in the anime.
- Nezumi (根津見 Nezumi?, known as Nibbles in the English DDM video game) is a boy with buckteeth that uses a sob story about him getting hit by yo-yos in a robbery to lure Yugi and Jonouchi to Hirutani. Nezumi tells Jonouchi that three gang members ambushed him, beat him up, and stole his yo-yo. Out of anger, Jonouchi asks Nezumi to lead him to the gangsters. Yugi and Jonouchi travel to Hirutani's abandoned warehouse, where scores of gang members ambush the two boys. Nezumi runs away when Yugi and Jonouchi manage to defeat the gang members. He only appears in the manga.
- Mr. Karita (刈田先生 Karita-sensei?, known as Mr. Titus in the English DDM game) is a P.E. teacher who harasses Ryo Bakura on his first day at Domino High School. Karita saw him walking through the hallways with an (unwanted) group of girls. He angrily pulled Bakura aside and recognized him as the new student, who has caused problems in his last school. Insistent on disciplining him, he yelled at Bakura that this school has rules and seized him by the hair, saying that boys with long hair is against the rules. He ordered Bakura to have his hair shaved for the next day if he wants to be treated as a student, and walked off laughing.
- Insector Haga (インセクター羽蛾 Insekutā Haga?, Weevil Underwood in the English anime) is the Japanese champion of Duel Monsters (Magic & Wizards in the Japanese manga), known for his deck of mainly insect-type monsters and insect-related magic and trap cards. Haga is not above cheating to ensure his stategies work; he put a Paracitic Insect card in Jonouchi's deck to ensure Insect Barrier would work.
- Dinosaur Ryuzaki (ダイナソウ竜崎 Dainasō Ryūzaki?, Rex Raptor in the English anime) is the runner-up of the Japanese Duel Monsters tournament, and seems to be acquainted with the champion, Insector Haga. His nickname is derived from his fondness for dinosaur-themed deck of cards. However, Ryuzaki is defeated by Jonouchi in the Duelist Kingdom tournament and has his Red-Eyes Black Dragon, a card that would become a trademark for Jonouchi, taken as a result of a gamble. Ryuzaki makes a brief reappearance in the Battle City arc, having been defeated by the pseudo psychic, Esper Roba.
- Ryota Kajiki (梶木 漁太 Kajiki Ryōta?, Mako Tsunami in the English anime) is an ocean-themed duelist appearing both in the Duelist Kingdom and Battle City arcs. Introduced in the Duelist Kingdom arc, he duels Dark Yugi and is defeated. In Battle City, he duels Katsuya Jounouchi, and his backstory is further expanded. It is revealed that Kajiki's father was a great fisherman that was lost at sea. Ryota Kajiki is the first opponent of Dark Yugi in a game to have no ill intentions. In the English anime, Mako Tsunami believes his father is alive and duels to raise money to fund a trip to search for him; in the Japanese anime, Ryota Kajiki duels in his father's memory. Jounouchi defeats Ryota in their duel. Then Ryota gives Jonouchi two of his cards, Floating Whale Fortress and The Legendary Fisherman, a card which resembles his deceased father. In the English adaptation he is voiced by Andrew Rannells. In the Japanese original version he is voiced by Daisuke Namikawa.
- Keith Steve Howard (キース・ハワード Kīsu Hawādo?), better known as Bandit Steve Keith (バンデット・キース Bandetto Kīsu?) is a character in the anime and manga series Yu-Gi-Oh!. He is an American Duel Monsters/Magic & Wizards champion and a "Card Professor", hunting big prizes at tournaments. Bandit Keith first appears as one of many entries in the Duelist Kingdom arc of the anime/manga. In flashbacks, it is revealed that he was once the champion of Duel Monsters in America, until he dueled Maximillion Pegasus (Pegasus J. Crawford in the Japanese anime and manga) at the American Championship tournament (taking place some time before the Death-T arc of the manga). Keith, shocked and humiliated at being defeated, became depressed over the defeat and seeks to defeat Pegasus and reclaim his lost glory. It's through Pegasus' match with Keith that Kaiba found out about Pegasus' ability to read minds. In the Japanese anime, he is voiced by Hajime Komada, while in the English adaptation he is voiced by Ted Lewis.
- Ghost Kozuka (ゴースト骨塚 Gōsuto Kotsuzuka?, known as Bonz in the English anime) was a contestant in Duelist Kingdom who worked for Bandit Keith. Keith was responsible for giving Ghost Kozuka some cards to enhance his zombie deck in order to duel Jonouchi in Duelist Kingdom's caverns, which housed the corpses of World War II troops. Ultimately, Ghost Kozuka loses to Jonouchi. Following this loss, after sealing Yugi and his friends in a cave, he has his Star Chips stolen by Bandit Keith and presumably is sent off the island. He returns during Battle City, but is defeated by Yami Bakura; in the anime, he is additionally sent to the Shadow Realm. Ghost Kozuka is voiced by Masami Suzuki in the Japanese anime and voiced by Amy Birnbaum in the English adaptation.
- Step Johnny (ステップ・ジョニー Suteppu Jonī?, known as Johnny Steps in the English anime and Dreadlock Johnny in the Singaporean dub) is a dancer, who challenged Anzu to a game of Super Dancer (スーパ・ダンサー Sūpa Dansā?), similar to Dance Dance Revolution, during her date with Dark Yugi. In the manga, Johnny challenged Anzu to the dance battle game. Although Dark Yugi told Anzu that this gamer isn't worth her time, she refused to back down from a challenge and went up against Johnny. Johnny said he'd go easy on her because she's hot, and said she'd have to go on a date with him if he loses. Anzu refuses, but plays anyway and defeats him.
- Esper Roba (エスパー絽場 Esupā Roba?, known as Espa Roba in the English anime) is one of the contestants in Battle City who claimed to have ESP. In reality, he is a fraud who uses his younger brothers to spy on and reply back to him the cards in his opponent's hand, thus allowing him to 'predict' the opponent's strategies almost before they perform them. The psychic front was to build an impression of an unbeatable duelist and thus deflect any abuse usually heaped upon Espa Roba and his brothers; they were heavily bullied due to being carnival folk before. Despite his cheating ways, he is a strong duelist. However, Jonouchi manages to beat him, receiving his best card as an ante, Artificial Human Psycho Shocker (人造人間－サイコ・ショッカー Jinzōningen Saiko Shokkā?, "Jinzo in the English TCG").
- Ahmet (アメット Ametto?) is one of the two men hired to help Sugoroku Mutou through the Pharaoh's tomb, the Shrine of the Shadow Games, back in the early 1960s. In the tomb, Sugoroku soon realized that the traps were like a game. Multiple statues armed with swords slide by on the high catwalk. To cross, a person needed to walk across left footed, and if they ran on both legs, the statues would kill them. Unfortunately, the two brothers were right footed. Ahmet makes it to safety, while his brother panicked and started running. The statues soon stabbed his brother with their swords, causing him to fall to his death (in the English dub, he fell into a Shadow Pit and became trapped in the Shadow Realm). Ahmet pulled a gun on Sugoroku, blaming him for his brother's death, and threatened to shoot if they didn't continue. They soon made it to the treasure, where only those of courageous hearts may pass. Ahmet shoots Sugoroku, causing him to fall and grab onto one of the catwalk's ledges. Ahmet walked over to the Millennium Puzzle, but proved to have a heart of a coward, and a monster appeared and devoured him alive as a Penalty Game (in the English adaptation of the anime, he is sent to the Shadow Realm)
- Mushara (マッシャーラー Musshārā?) is one of the two men hired to help Sugoroku Mutou through the Pharaoh's tomb, the Shrine of the Shadow Games, back in the early 1960s. In the tomb, Sugoroku realized that the traps were like a game. Multiple statues armed with swords slide by on the high catwalk. To cross, a person needed to walk across left footed, and if they if ran on both legs the statues would kill them. Unfortunately, the two brothers are right footed. His brother Ahmet makes it to safety, but Mushara panicked and started running. The statues stabbed Mushara with their swords, causing him to fall to his death. In the English dub, he fell into a Shadow Pit and became trapped in the Shadow Realm.
- Shougo Aoyama (青山翔吾 Aoyama Shōgo?) is a character who appears in the 1998 Toei movie as one of the main protagonists. He was a boy who didn't play games with his friends because he was afraid of losing, and was regularly bullied by a group of three boys. One day, at a card shop, he opens a card pack containing the rare "Red-Eyes Black Dragon" card. However, he is too timid to pull a winning streak, and once he gets the Red-Eyes, he resorts to simply intimidating people with it so they won't duel him.
- Arthur Hopkins (アーサー・ホプキンス Āsā Hopukinsu?, known as Arthur Hawkins in the English anime dub) is a character that appears exclusively for the second series anime and the grandfather of Rebecca Hopkins. He appears to be based on Sugoroku's American gaming friend that gave him the Blue-Eyes White Dragon card, who only appears in a photo and is unnamed in the original manga.
- Leonhart von Schroeder (レオンハルト・フォン・シュレイダー Reonharuto fon Shureidā?, Leon von Schroeder in the English dub) is a character created exclusively for the KC Grand Champion filler arc of the second series anime. He is Siegfried von Schroeder's younger brother. While Siegfried ran Schroeder Corporation, Leonhart took up Duel Monsters and dueled in several tournaments under the alias of Leon Wilson (レオン・ウィルソン Reon Wiruson?) to avoid his family. He is voiced by Seiko Noguchi in the original and by Andrew Rannells in the English adaptation.
- Yu-Gi-Oh!. Volumes 1. June 2003. VIZ Media.
- Yu-Gi-Oh! Duelist. Volumes 9-10, Chapters 75-86. 2005. VIZ Media.
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- Yu-Gi-Oh! Duel Monsters cast (Japanese website) (遊 戯 王 声 優 情 報)