List of Tom and Jerry characters
Main characters 
Tom Cat and Jerry Mouse 
Thomas "Tom" Cat is a blue/grey domestic short-haired cat who first appeared in the 1940 animated short Puss Gets the Boot. Tom was originally known as "Jasper" during his debut in that short, however, beginning from his next appearance in The Midnight Snack and onwards, he is known as "Tom".
Jerry Mouse is a brown house mouse, who first appeared as an unnamed mouse in the 1940 MGM animated short Puss Gets the Boot. Years later, William Hanna gave the mouse's original name as "Jinx", while Joseph Barbera claimed the mouse went unnamed in his first appearance. In a story entitled " Dancing Dan's Christmas", Damon Runyon describes a pre-prohibition era drink named "Tom and Jerry". It seems likely that Jerry's naming may have been inspired by either the name of the drink (if indeed it really existed), or, since the stories pre-date the cartoons, Mr Runyon.
Recurring characters 
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Spike and Tyke 
Spike (occasionally referred to as Butch or Killer) is a stern but occasionally dumb American bulldog who is particularly disapproving of cats, but a softie when it comes to mice (though in his debut episode, Dog Trouble, Spike goes after both Tom and Jerry), and later, his son Tyke. In the shorts Jerry would often try to get Tom in trouble with Spike making him a shoo-in for a beating from the bulldog. Spike has a few weaknesses that Tom tries to capitalize upon: his possessiveness about his bone and his ticklishness. He made his first appearance in the 1942 Tom and Jerry cartoon Dog Trouble, and his first speaking role was in 1944's The Bodyguard, where he was voiced by Billy Bletcher up until 1949, from which point he was voiced by Daws Butler. Unlike his father Spike, Tyke does not speak. He only communicates by yapping, whimpering, growling, facial expressions and wagging his tail. In Tom and Jerry Kids, Tyke does have a speaking role in the programme and is the first time that viewers were able to hear Tyke speak. Spike is very protective towards his son and gets very angry at Tom if Tyke is bothered or harmed. Although Tyke has spoken in Tom and Jerry kids, he has laughed in one episode of Tom and Jerry.
Butch is a black and white alley cat who made his first appearance in the Tom and Jerry series in the 1943 short Baby Puss, alongside Topsy and the already-established Meathead. His character, however (along with the character of Toodles Galore), first appeared in the 1941 MGM short The Alley Cat, directed by Hugh Harman. Butch is the leader of the alley cat bullies who usually help Tom catch Jerry (although a very few times, he does however become enraged when Tom's offense between him and Jerry has gone far enough). In his first appearance, however, Butch was an antagonist, tormenting Tom after Tom's young girl owner treated him like a baby—to the point of dressing Tom up in a diaper, a bonnet, and pink paw mittens. Thus costumed, Tom couldn't help but be a figure of fun—both for Butch and his gang, and for Jerry. Butch also battles with Tom over Toodles Galore and her affections in a couple of shorts including the 1946 short, Springtime for Thomas and the 1951 short Casanova Cat.
Clint Clobber 
Tom's owner in three of the thirteen Gene Deitch cartoons. He only appeared in 3 cartoons Down and Outing, High Steaks and Sorry Safari. He has severe anger issues and is repeatedly brutal to Tom for his mistakes.
There is some debate as to whether this is the genuine Clint Clobber as the real Clint would never be an animal abuser, he was just a put-upon grouch.
Toodles Galore 
Toodles Galore is an attractive white female cat, and is supposedly Tom's usual love interest, although Tom is a reputed playboy, and had other love interests before and after Toodles. Toodles is the only love interest who appeared more than twice, and is probably the most favored. During the classic era, Tom had to compete twice against Butch and even once against Spike/Killer for Toodles' affection, and he lost them all. In one episode Casanova Cat, Toodles fell in love with Jerry. However, in her final short Love Me, Love My Mouse, she remained with Tom. Toodles is one of the most anthropomorphic animals in the series, with the only cat features being her tail, nose and ears.
Mammy Two Shoes 
From the beginning, Tom also has to deal with Mammy Two Shoes (voiced by Lillian Randolph), an African-American domestic housemaid based on Hattie McDaniel. In the earliest shorts, Mammy is depicted as the maid taking care of the often opulent home in which Tom and Jerry reside. Later Tom and Jerry shorts are set in what appears to be Mammy's own house. Her face is never seen (with the exception of 1950s Saturday Evening Puss, in which her face is very briefly seen as she runs towards the camera), and she usually wallops the cat with a broom when he misbehaves. When Mammy was not present, other humans would sometimes be seen, usually from the neck down as well. Mammy would appear in many cartoons until 1952's Push-Button Kitty; Mammy's character was retired after that year following McDaniel's death. Later cartoons would instead show Tom and Jerry living with a 1950s suburban couple. Soon after, virtually all humans in the series had visible faces.
Nibbles is also a little grey house mouse who is close to Jerry and appears frequently with him, especially in the comics. He is sometimes seen as Jerry's nephew, but occasionally referred to as an orphan. In many cartoons, Nibbles is seen eating a lot (he is always hungry). In his first animated appearance, he was left on Jerry's doorstep, abandoned by his parents. Tom enjoys chasing Nibbles much as he does with Jerry.
Though the character was created under the name Tuffy for the comics in 1942, his early animated appearances (from 1945) gave him the name Nibbles. From the 1950s, the mouse was called Tuffy on-screen as well. In Tom and Jerry: The Magic Ring, the name Nibbles was used again — and the character was depicted as a pet-store mouse whom Jerry doesn't know.
In the Mouseketeer shorts, Nibbles speaks in French and English. He also is not Jerry's nephew; rather, he is the son of François Mouse—who does not make an appearance, but his name was given in two letters in the short Touche, Pussy Cat!
Another recurring character in the series was Little Quacker the duckling, who was later adapted into the Hanna-Barbera character Yakky Doodle. He appears in Little Quacker, The Duck Doctor, Just Ducky, Downhearted Duckling, Southbound Duckling, That's My Mommy, Happy Go Ducky and The Vanishing Duck. Quacker talks a lot compared to Tom and Jerry. In many episodes, he is the only one who speaks. He's very trusting, even trusting Tom in many situations in which Tom wishes to eat him. He's a friend of Jerry, but unlike Jerry harbors no hard feelings towards Tom. He also got his own series of shorts on The Yogi Bear Show (renamed Yakky Doodle) after guesting in several Hanna-Barbera TV shows.
Lightning is a ginger orange cat who first appeared in the 1948 short Old Rockin' Chair Tom as Tom's rival. Lightning is named as such because in his first short, he practically moved at the speed of lightning. In later cartoons, Lightning often appeared as one of Tom's alley cat buddies/rivals. He also appears in Switchin' Kitten. Fans have occasionally confused Lightning with Meathead, though the two are not the same and have appeared side-by-side in two cartoons.
Topsy is a grey/brown kitten. He is one of Tom's alley cat friends/foes, although in one cartoon he befriends Jerry. He first appeared in Baby Puss; his final appearance in the original theatrical shorts was in Scat Cats. He also appears in Tom and Jerry Tales with a more yellowish color than before. In Professor Tom, Topsy is explicitly a house cat; more often (as in Saturday Evening Puss and elsewhere), he is depicted as an alley cat or a cat of unknown origin.
Meathead is a brown, mangy cat who wears a red toupee (which is occasionally seen the same color as the rest of his fur). He is generally portrayed as dull-witted and first appeared in the 1943 short, Sufferin' Cats!, as Tom's rival. Meathead later reappeared in Baby Puss and additional shorts as one of Tom's alley cat buddies/foes. In Scat Cats, he is seen as a gray cat. Fans have occasionally confused Meathead with Lightning, though the two are not the same and have appeared side-by-side in two cartoons.
George and Joan 
George and Joan are an average middle class white couple, who first debuted on the 1954 episode Pet Peeve. They are the new owners of Tom and Spike, but Tom likes to keep Joan company and Spike likes to keep George company. Joan is George's wife and is often seen either cooking in the kitchen, or sitting on her armchair knitting or sewing a dress with Tom keeping her company. George on the other hand is Joan's husband, he hates the monthly bills and complains that they're too expensive. But when he's not complaining about the bills, he is sitting on his armchair or on the sofa reading the newspaper wearing his smart purple or grey suit and Spike keeping him company. Both George and Joan are very kind and polite towards each other and Tom and Spike. In Pet Peeve, George and Joan decided that they keep Jerry as a pet because he is easy to look after and doesn't eat too much (George and Joan do not know Jerry's secret: He eats a lot more than Tom and Spike combined, which explains the amount of food he has in his mouse hole shown later) and tell Tom and Spike to leave. However, in later episodes with George and Joan, Tom and Spike still happily live with them and Jerry is not known by the couple and he is not a pet anymore.
Jeannie is an average teenager who spends much of her time talking on the phone to school friends about their dates and her own activities. Jeannie is the babysitter of George and Joan's baby, and they often call on her to look after the baby if they're going out. Jeannie proceeds to leap straight onto the phone just as George and Joan shut the front door, which tells us that she is very negligent about her job. Despite this, Jeannie is very kind, friendly, cheerful and rarely loses a smile—except to scold Tom for "bothering the baby," which she thinks he is doing on purpose to annoy her. Jeannie was seen in only two cartoons Busy Buddies and Tot Watchers. She also got her own series of Jeannie after guesting in several Hanna-Barbera TV shows.
The Ants 
The Ants are an army of red ants who steal food as they see them. They appeared in four cartoons Cat Napping, Pup on a Picnic, Barbecue Brawl, and Carmen Get It!. They also appeared in Tom and Jerry Kids. They're unusually heavy for their size, and their combined weight often causes many items, such as Tom's hammock, to break. It's unclear how or why the ants are so heavy, as they are even capable of making tables and diving boards shake as they march onto them.
Tom's and Jerry's guardian devils 
Tom's and Jerry's devil appeared in three cartoons Sufferin' Cats!, Springtime for Thomas and Smitten Kitten. In the first of these cartoons, he served as evil coscience for Tom and in the other two for Jerry.
Fluff, Muff and Puff 
Fluff, Muff and Puff are a trio of brown, black and orange kittens that first appeared in Heavenly Puss as adorable kittens in cameo roles. They also appeared in Triplet Trouble as cute but extremely mischievous kittens.
Toots is a female cat brought home by Mammy Two Shoes who first appeared in Puss n' Toots and served as Tom's first love interest. She again appears in The Mouse Comes to Dinner that she will speaking in this short.
Robot-Tom and Robot-Jerry 
Robot-tom and Robot-Jerry are a cat-like-robot and mouse-like-robot who serve Tom and Jerry (except at the end of Advance and Be Mechanized, when they get revenge and switch roles with Tom and Jerry, as they control their minds and make them do the work) in the three Chuck Jones outer space cartoons O-Solar Meow, Guided Mouse-ille and Advance and Be Mechanized. Robot-Tom's efforts to catch or trap Jerry or Robot-Jerry always backfire for Tom, except in Advance and Be Mechanized, when he succeeds to catch Robot-Jerry in the beginning.
Non-recurring characters 
Cousin George 
Cousin Muscles 
Cousin Muscles is Jerry's cousin and was only seen in the short Jerry's Cousin, voiced by Paul Frees. He is same height as Jerry, but he speaks with a tough stance and his strength can easily knock down a fully grown man. Cousin Muscles was called to Jerry because Jerry was having problems with Tom. When Muscles sees Tom, he grabs him and says Spike's famous "Listen, pussy cat!" catchphrase, but in a tougher tone. Muscles also appeared in Tom and Jerry: The Magic Ring, but his name is Freddie and he's hostile to Jerry and Nibbles, harassing them when they're locked inside his cage inside a pet store.
Joey is a tall grey mouse and Freddie's (formerly Muscles) dumber partner. He only appeared in Tom and Jerry: The Magic Ring
Topo is an Italian mouse who befriends Tom and Jerry and saves Jerry from Tom and Tom from a dog (the dog comes back later on with two other dogs and the three of them try to catch Topo, but Tom and Jerry return the favors and save him) in the short Neapolitan Mouse.
Another female cat by the name Toots who only appears in The Zoot Cat.
The Lion 
From only one short in which this lion escapes from the circus and Jerry does his best to hide him from Tom. He appeared in Jerry and the Lion involves hiding in lampshades and eating food out of Tom's hand. Eventually, The Lion catches a boat back to Africa.
Jumbo is a baby elephant who appeared alongside her mother in Jerry and Jumbo.
Baby Woodpecker 
Uncle Pecos 
Pecos is Jerry's bluegrass-singing uncle who appears once, in the short Pecos Pest. Uncle Pecos lives with Jerry for awhile in preparation for his singing debut on TV. He is a bane to Tom every time one of his guitar strings snap, because he plucks one whisker off Tom's face to replace it. He also appears in Tom and Jerry Tales. He was voiced by Shug Fisher.
Calypso Cat 
A Caribbean cat famous for his Calypso drumming, he appeared in the short Calypso Cat.
Dupli Cat 
Dupli Cat is a cat who appeared in the short Cat and Dupli-Cat where he fought with Tom over Jerry, imitating Tom in the first half of the cartoon.
Nancy is the owner of Tom in Baby Puss. She treats Tom like a baby and poisons him and Jerry with castor oil as Tom's "punishment" for leaving the crib.
Dicky Moe 
Tom and Jerry: The Movie 
The following characters were introduced in Tom and Jerry: The Movie.
Robyn Starling 
Robyn is an "orphan" girl who Tom and Jerry met under an old bridge. She is not happy and wants to live with her father, who she thinks is dead. She lives with her guardian named Pristine Figg. In the end, she learns that her father is alive and runs away with Tom and Jerry to find him. Voiced by Andi McAffee.
Pristine Figg 
Pristine Figg is the primary antagonist of the movie. She is a fat lady and Robyn's guardian, but who is only doing it for the money. She acts as Robyn's "aunt", but she takes over the house and forces Robyn to sleep in an attic, giving her room to her pampered dog, Ferdinand. In reality, after Mr. Starling is presumed killed in an avalanche, she begins scheming with her mean lawyer, Lickboot, to sway the house from Robyn, though her plans are put on hold when she receives a telegram which informs her that Robyn's father is actually alive, and she does her best to make sure Robyn never finds out, but is ultimately foiled by Tom and Jerry. She is last seen trapped aboard an out-of-control speedboat, and her final fate is unknown. Voiced by Charlotte Rae.
Lickboot is Figg's lawyer and the secondary antagonist of the film. He is just as vulgar as Figg, if not more, and is only after money. He is last seen trapped with Figg aboard an out-of-control steamboat and his final fate is not shown. Voiced by Tony Jay.
Puggsy is a homeless street-dog that Tom and Jerry meet. Using his knowledge from his friendship with Frankie DaFlea, a flea, Puggsy persuades Tom and Jerry to put their animosity behind them and become friends, which they accomplish albeit with some difficulty. Tom and Jerry later break him out of Dr. Applecheek's abusive pound and he is last seen reading a newspaper article about Tom and Jerry helping Robyn find her father, proud of the pair for finding friendship. Voiced by Ed Gilbert.
Frankie DaFlea 
Frankie is a green flea and Puggsy's best friend. He too teaches Tom and Jerry to become friends. Voiced by David Lander.
Mr. Starling 
Mr. Starling, credited and referred to often as "Daddy Starling", is Robyn's father who leaves his daughter in Pristine Figg's care while he goes on an expedition. He is presumed killed in an avalanche, but when news reaches Robyn's ears that he is alive, she sets off with Tom and Jerry to find him. He appears in the film's final scene to rescue Robyn, Tom and Jerry from their burning cabin, and later takes Tom and Jerry in as gratitude for helping his daughter. Voiced by Ed Gilbert.
Dr. J. "Sweetface" Applecheek 
Dr. J. Applecheek is a so-called "sweet" man who adores many pets and has contributed to many animal rights. However, he is in reality a cruel, heartless man who secretly specialises in abducting pets (with help from his thugs disguised as straycatchers) and imprisoning them and holding them ransom for their owners to pay him large sums of money. However, his schemes finally backfire when Pristine Figg brings him Tom and Jerry and they lead an escape. Applecheek loses most of his money as a result of the damage and seeks to regain his fortune by finding Robyn first and earning the one million dollar bounty (which he does not know is fake). In the ensuing chase, he steals an ice cream moped but falls off a damaged bridge and lands directly on Captain Kiddie in the river, ending up trapped in the ice cream box and stranded in the river. Voiced by Henry Gibson.
Ferdinand is Aunt Figg's dog who is always in his skateboard as they go in places. He is a third antagonist in the film. Voiced by Michael Bell.
Captain Kiddie 
Captain Kiddie is the owner of a small amusement park near a river. Although he boasts about a successful career, it is hinted several times that he is rather unpopular and his performances have ended in failure. He finds Robyn stranded on a beach and takes her in, but betrays her to Pristine Figg upon discovering a one million dollar bounty on her head. When Robyn flees with Tom and Jerry, Kiddie gives chase in his inflatable speedboat, but Dr. Applecheek falls off a broken bridge while riding a stolen moped and lands directly on him. The blast sends Kiddie into the air and he holds onto the bottom of the bridge to keep from falling in the river. Although he is not entirely malevolent, since he genuinely believed Figg loved Robyn, he can be considered a minor antagonist. Voiced by Rip Taylor.
Squawk is Kiddie's glove puppet and "first mate" (though he actually talks via ventriloquism). He frequently makes smart remarks about Captain Kiddie's failing career and small amusement park. Voiced by Howard Morris.
Tom & Jerry Kids 
The following characters were introduced in the television series Tom & Jerry Kids.
The son of Droopy. He is very intelligent and seductive with many women. He is always with his father and they always do the same (although sometimes Dripple thinks “better” than his father). The identity of his mother is never mentioned or even addressed, although, due to Droopy's frequent relationships with Miss Vavoom, it can be assumed that his mother is either dead or is divorced from Droopy with no visitation rights. He is voiced by Charlie Adler.
The villain of the "Droopy and Dripple" segments. A bad and cruel wolf whose only mission is to ruin the life of Droopy and Dripple (and sometimes to remain with Miss Vavoom). Sometimes for of crazy scientist whom it loves to dominate the world, of space villain, a criminal fat person (known as "The Chubby Man"), etc. His character is based on the wolf in Red Hot Riding Hood. He is voiced by Frank Welker.
Miss Vavoom 
The contiguous woman of the show. She is very seductive and she always takes different hairdos. She always is conquered by Droopy and most of times is the greater target of McWolf. Sometimes she is called Bubbles Vavoom, Ultra Vavoom, Sugar Vavoom, etc. Her character is based on Red from Red Hot Riding Hood. She is voiced by Teresa Ganzel.
Calaboose Cal 
Urfo is a six-legged alien dog that arrives on Earth many times and helps Jerry fend off Tom. His owners often send people to retrieve him.
Minor characters of Tom & Jerry Kids 
A rooster thief that tries to stole banks, he is an enemy (besides of Mc Wolf) of Droopy and Dripple, voiced by Pat Fraley
He is a young boy who sees one day unloading in his room Urfo.
Kyle the Cat 
Bernie the Swallow 
A medically challenged yellow swallow that is friends with Jerry in "Hard to Swallow". He had a color change to blue in "Swallow the Swallow" and "Grab that Bird" as he is chased mostly by Clyde and Kyle. Voiced by David L. Lander.
Wild Mouse 
A grayish-green, shaggy fanged mouse who occasionally replaces Jerry and outwits his foes. Like Tom and Jerry, Wildmouse is voiced by Frank Welker. He first appears in the episode Wildmouse and is last seen in the episode King Windmouse.
A cougar who loves torment the rest. He wants to eat Tyke (and Spike gives deserved his him).
Muscle Guy 
As his name says it, he is muscular and jealous. He is the boyfriend of Miss Vavoom in an episode.
The Vermins 
A trio of rocker mice who Jerry loves. He becomes a part of the group. They appear in the episode The Vermin.
The Chubby Man 
McWolf known name in "Droopy, Master Detective". He is fat, cruel, bad and vicious.
Mystery Lady 
Miss Vavoom known name in The Calaboose Cal shorts. She is the assistant of Calaboose Cal.
Mr. Sheboygan 
The owner and manager of Sheboygan Records, Inc. (a fictional studio). He requests cats (including Tom, whom he refers to "cat baby" or "pussycat baby") to help get rid of mice (including Jerry) whom they believe are a threat to the performers on the stage. He also has an assistant who similarly resembles Miss Vavoom, but wears glasses unlike Vavoom. Hence the name being derived upon a Wisconsin city, the series mainly takes place in California where Hanna-Barbera's headquarters were located. He appears in the episode Two-Stepping Tom.
A cat who states he was a fraidy cat in the past, and no longer a fraidy cat. He looks exactly like Tom, but wears a yellow baseball cap with a green stripe, and has a speaking role; and he claims that Tom is his twin brother, despite the fact that Tom has no siblings. He is often sarcastic and is also known to raid a refrigerator whenever he's hungry, and whenever a mouse including Jerry is near, he is rather still afraid of mice. He appears in the episode Fraidy Cat that is based upon the short Timid Tabby and not of the one with the same name, and also modeled after Cousin George. He is also the main antagonist of the episode he appears in.
The White Tabby 
An unnamed white quadrupedal cat whom Tom first believes is his first lover, but is revealed to be more interested in mice, which she often describes as "Fuzzy Wuzzy". She is depicted with a high-pitched voice, and often behaves like a biped when she carries things in her forefeet including gifts among other things. She does not accept kisses unless she receives a mouse. When Tom brought Jerry to her, she cuddled Jerry, and then they both went out in a limousine, while Tom was left out from going along. The tabby in this cartoon is based upon Toodles Galore from the classic shorts, although Toodles is a biped, in contrast this character. She appears in the episode Tom Thumped.
Cindy Lou 
Tom's rumored crush who has a birthday party at her house, and Tom brings her many presents. She later reveals that she is already in love with another cat and goes out with him instead, leaving Tom behind, which made him believe that she dumped him. She appears in the episode Birthday Surprise.
The Babysitter 
An unnamed teenage girl who is instructed to babysit the baby while the baby's mother is gone, but relies on the telephone most of the time. Whenever Tom points to her that she needs to watch the baby and spend less time on the phone, she refuses to listen and objects him anyway, believing he's trying to bother the baby and also refers to Tom by insulting names. She also hides the fact that she relied on the telephone so that the baby's mother doesn't find out. The babysitter in this cartoon is based upon Jeannie from the shorts: Busy Buddies and Tot Watchers; but has orange hair in pigtails and is dressed in a 1980s fashion. She appears in the episode Tom, the Babysitter.
Chase School Teacher 
A teacher at Cat and Mouse Chase School, featuring a golden statue of Tom chasing Jerry. He teaches the cats and mice on opposing sides on how Tom chases after Jerry while Jerry evades or backfires Tom. When the opposing sides debate over which species are the best, the teacher commands them to settle down by yelling out "Order!". When the cats and mice in the audience start fighting each other for the last time, he says that he will call the police on them, but they throw a pan of pie into his face anyway, and continue fighting, turning everything into a disaster. He appears in the episode Chase School.
Sergeant Boffo 
A martial arts trainer and head of Sgt. Boffo's Ferocious Feline Mouse-Bashing School, and former plumber. He calls Tom through the TV and trains him to be tough enough in catching mice. Boffo is depicted as a large brown Manx cat who is often headstrong and quick-tempered and wears a green military uniform top with a black tie and wears a green beret. He appears during the first half of the episode I Dream of Cheezy (a play on I Dream of Jeannie).
Sergeant Boffo's Students 
A trio of tall blackbelt-class martial arts cats at Sgt. Boffo's Ferocious Feline Mouse-Bashing School. They wear white keikogi with black belts, and wear hachimaki of their own corresponding colors. One is dark brown and obese, and wears a blue hachimaki, and has the deepest voice of the three, and wears his keikogi with his top exposing his belly and with the belt worn in a high-waisted manner. Another is orange and very slim, and wears a yellow hachimaki, and has the highest voice of the three. The last of the three is tan and also slim, and wears a red hachimaki, but ironically isn't seen to do action like the other two. Sergeant Boffo refers to them as "troops". Despite their seniority, they don't successfully destroy the mouse robot by themselves. Tom joined in with the three, and was wearing a white keikogi with a white belt and a turquoise hachimaki, and attempted to take over their lessons and often got injured, but eventually outperforming the three at the final blow. These three cats along with their trainer, Sergeant Boffo appear only in I Dream of Cheezy.
An elephant who performed in a circus and was originally a buddy to Jerry. In his final appearance in the episode Two Stepping Tom, he is later afraid of mice, and he jumps up in fright of Jerry in sight, and any attempt to land on Jerry, he lands on Tom instead.
Super Mouse 
A super-hero mouse of the space. Voiced by Joe Alaskey.
Slowpoke Antonio 
Jerry's cousin from Texas and probably the son of his uncle Pecos. They share the same traits, such as singing, playing guitars and superstrength. He wears a blue cowboy hat, a green neckerchief, and brown gloves and speaks with a Texas drawl (just like Slowpoke Rodriguez from the Looney Tunes). Voiced by William Callaway.
Lightning Bolt 
The Super Squirrel who hurls Lightning Bolts. He lives in a cloud in the sky, watching over the world and trying to protect the innocent. Voiced by Charlie Adler.
Museum Manager 
The human manager of the Museum of Natural History who employs Tom to watch the museum overnight until 6:00 AM. He is shown wearing an auburn-colored uniform; and during Tom's employment, Tom wears nearly the same uniform, but without pants, shoes, and a tie, since he is a cat. He is later revealed to be a brown Tasmanian devil in disguise to frighten Tom. He appears in the episode The Watchcat.
A fox who was raised in Hokey Finokey Swamp and escapes from the circus to get revenge of Sheriff Potgut's malicious reputation. He takes pride in looking for the treasure hidden on an island with X-crossed palm trees, while Sheriff Potgut and the Gator Brothers (Sheriff Potgut's henchmen) hijack his plans, until discovering the treasure turns out to be a message from him: he finally leaves Hokey Finokey Swamp and goes to South America to enjoy the rest of his life by himself, never to meet with Sheriff Potgut and the Gator Brothers anymore. He is depicted with burnt orange fur and white whiskers, and wears an azure shirt and red vest and azure hat with a red band. He appears in the episode Cajun Gumbo as the episode's only protagonist.
Sheriff Potgut 
The elderly sheriff of Hokey Finokey Swamp. He is arrogant, rude, and self-centered. He threatened to send Swampy back to the circus (which Swampy is aware of the fact that it promotes animal cruelty), throwing Swampy into tears. He also envies the map Swampy made out to search for the hidden treasure. He appears in the episode Cajun Gumbo as the episode's main antagonist.
Gator Brothers 
Sheriff Potgut's henchmen. They appear in the episode "Cajun Gumbo" as the episode's secondary antagonists.
Movie characters 
The grey mouse often presented as Jerry's nephew in the original shorts, Tuffy appears throughout several movies, each one in a different role, such as Tom and Jerry Meet Sherlock Holmes, in which he is a priest who hides Tom, Jerry and Red from the authorities, and Tom and Jerry and the Wizard of Oz, where he is a Munchkin mouse who also seeks out the wizard to become taller.
Droopy and Spike/Butch 
Recurring minor antagonists. In Tom and Jerry Meet Sherlock Holmes, they are a pair of inept police constables who pursue Tom, Jerry and Red throughout London. In Tom and Jerry and the Wizard of Oz, they are guards working for the Wicked Witch of the West. Tom and Jerry manage to subdue Spike and take his disguise to infiltrate the Witch's lair, and after a long chase, they knock Droopy out. Following their return to Kansas, Droopy is revealed to be the Gales' pet hound.
Spike and Tyke 
In Tom and Jerry Meet Sherlock Holmes, they are depicted as constables assigned to guard jewels, though Tyke appears to be far smarter than his father: while Spike rambles on about the basics of being a guard dog, the jewels are stolen under their nose and it is Tyke who sounds the alarm. Later on, they are assigned to guard the Crown Jewels, and manage to catch James Moriarty's rogue cat burglars in the act, giving them a severe beating reminiscent of the offscreen beatings Spike gives Tom in the original shorts.
The titular character from Red Hot Riding Hood. She appears in Tom and Jerry Meet Sherlock Holmes as the prime suspect behind a series of robberies conducted by rogue cats working for James Moriarty. She seeks out help from Sherlock Holmes and Dr. Watson, who eventually catch Moriarty and clear her name. In the film, Jerry develops a crush on her, much to Tom's chagrin.
Sherlock Holmes 
The titular character in Tom and Jerry Meet Sherlock Holmes. In the movie, he is Tom and Jerry's owner. He is solicited by Red to investigate several jewel thefts which make her look like the culprit. Voiced by Michael York.
Dr. Watson 
Sherlock Holmes's medical advisor and assistant. Voiced by John Rhys Davies.
James Moriarty 
The main antagonist of Tom and Jerry Meet Sherlock Holmes. He plans to steal the Crown Jewels during a solar eclipse and implicate Red as the culprit, but he is caught by Sherlock Holmes. Voiced by Malcolm McDowell.
Dorothy Gale 
The main protagonist of Tom and Jerry and the Wizard of Oz. Her storyline remains the same as the original film, with the inclusion of Tom and Jerry as her farm pets and "bodyguards".
Auntie Em and Uncle Henry 
Dorothy's aunt and uncle in Kansas. They persuade Tom and Jerry to work together to keep Dorothy out of danger, a promise they keep throughout their journey through Munchkinland.
The Scarecrow, Tin Man and Cowardly Lion 
Three residents of Munchkinland who join Dorothy, Tom and Jerry on their quest to find the Wizard of Oz and return to Kansas.
Almira Gulch/The Wicked Witch of the West 
The main antagonist of Tom and Jerry and the Wizard of Oz. Her role in the film remains the same, but she desires revenge on Tom and Jerry for repeatedly foiling her plans to harm Dorothy. She is melted in the end when Dorothy drenches her in a bucket of water.
- IMDb. "Puss Gets the Boot". Retrieved 16 May 2010.
- Mark Christopher Carnes, American national biography (2)
- IMDb. "The Midnight Snack (1941)". Retrieved 16 May 2010.
- Barbera, Joe (1994). My Life in 'Toons: From Flatbush to Bedrock in Under a Century. Atlanta, GA: Turner Publishing. pp. 73–76. ISBN 1-57036-042-1.
- Hanna, William (2000). A Cast of Friends. Da Capo Press. pp. 39–46. ISBN 0-306-80917-6.