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James P. Sullivan
Voiced by: John Goodman
One of the series' two protagonists. He is a large, bear-like monster with shaggy blue fur, purple polka dots, a colossal tail, and curvy beige horns.
- Anti-Hero: In the prequel he starts off as being really condescending and arrogant. He gets better, but that doesn't stop him from cheating at the final round of the Scare Games out of a lack in faith in Mike's scaring skills.
- Barefoot Cartoon Animal: He has an ursine-like appearance and wears no shoes.
- Bears are Bad News: In the prequel, he is this to the police in the summer camp, who mistake him for a bear.
- Beary Friendly: He partially looks like a bear, and is a humble fellow despite his monstrous looks.
- Beware the Nice Ones: He is kindhearted, but he can be ferocious when he has to.
- Big Damn Heroes: He rescues Boo from the Scream Extractor.
- Blue Is Heroic: One of the definitely heroic protagonists, and is covered in blue fur.
- Brains and Brawn: The Brawn to Mike's Brains. Sully has the physique and natural talent to bring out the scares.
- Bruiser with a Soft Center: Sulley has super strength and a mighty roar, but is really a sweet guy under it all.
- Brilliant, but Lazy: In college, where he had the physique to be a naturally talented Scarer, but he lacks the motivation to study the field and would prefer to rely on his roaring for all kinds of scaring."You don't have to study scaring! You just do it!"
- Celibate Hero: Neither in the prequel or the original movie does he show serious pursuance of women (aside a small gag where he flirts with a couple of school girls in Monsters University). His companion Mike is the one romantically active.
- Character Development: Starts out as a jerk in Monsters University because of his talent. He gets better though.
- Delinquent Hair: While not really a delinquent, Sulley sports a fauxhawk in his college days, which compliments his initial Jerk Jock personality.
- Deuteragonist: Of Monsters University, where Mike is the protagonist. He doesn't even appear for the first 15 minutes.
- Dumb Jock: Played with. In college Sulley was actually talented and learned to grow out of his academic incompetence.
- Et Tu, Brute?: His very reaction to his mentor and best friend banishing him and Mike to the Himalayas is of utter shock.
- Foil: To Randall. He and Sulley are the two best Scarers of the company, got their scaring education at Monsters University and had the same Scaring 101 class. However, Sulley is a mammalian monster while Randall is reptilian. His color scheme is primarily blue with a bit of purple while it’s the opposite for Randall. Sulley’s strengths involve charging in at brute force while Randall has to sneak around using his invisibility to be physically effective. Sulley is sociable in both his college and adult years, and was more of a jock in college. Randall was always isolated from most monsters and was a nerd in his academic days. Sulley was an arrogant jerk in college who got kicked out of Roar Omega Roar for his poor grades. He had an intense rivalry with Mike, but eventually softened up to him and weaker monsters. However, he ended up expelled from MU, and humbled up after becoming a Scarer by climbing up the ladders at Monsters, Inc. Randall was sweet and self-deprecating in college, and got kicked out of Roar Omega Roar for his poor performance in the final round of the Scare Games. While Randall still continued to study and became a Scarer after graduation from MU, he grew to resent other monsters, especially Sulley and Mike, the latter being his closest friend prior to the Scare Games, and his mindset started to become fuelled by his vices.
- Four-Fingered Hands: Like several other monsters, probably to make the animation process easier.
- Gentle Giant: He is very nice despite being over seven feet tall.
- Heel Realization:
- One of the most powerful scenes in the movie is Sulley, when inadvertedly scaring Boo, realizing just what he's been doing to children all this time.
- Likewise in the prequel as he bonds more with Mike and Oozma Kappa and realizes what a jerk he's been.
- The Hero: Of Monsters, Inc., though he becomes The Lancer in Monsters University.
- Heroic B.S.O.D.:
- He goes through a brief one when he inadvertently scared Boo and gets exiled by Waternoose.
- By the end of Monsters, Inc., he has another one when Waternoose blames him for destroying the company.
- Heterosexual Life-Partners: With his best friend Mike.
- Honest Corporate Executive: Sulley becomes one at the end of the movie.
- Horrifying Hero: He's a monster, what would you expect?
- I Did What I Had to Do: Regarding tampering with Mike's Scare Simulator so he'll be guaranteed to get a record scare, although he comes to regret this.
- I Was Quite The Looker: Not to us (Unless you're into that sorta thing) but if you pay close attention, you’ll notice that back in his college days he was a lot leaner, had brighter, shiner fur, and more of it on top of his head.
- Inadequate Inheritor: He mentions to Mike that despite his arrogance, he is quite insecure due to the pressure the Sullivan family puts on him, as Sulley's father was a famous scarer (hence doing anything he can to get back into the Scaring Program).
- Inferiority Superiority Complex: Supposed to be this in contrast to Mike in University. While Mike isn't scary, he's extremely skilled and ridiculously confident, whereas Sulley has the traditional scaring build as an ideal monster, but he's insecure, terrified and feeling pressed by fellow peers because of his famous surname. He gets better in the sequel.Sulley: I may always act like I'm scary and all, but actually, I'm terrified.
- Ink-Suit Actor: He's really just a hairy John Goodman, well, a hairier John Goodman.
- Jerkass: In Monsters University, he's largely inattentive, apathetic, and outright rude to many of his peers.
- Jerkass Façade: However, he only acted that way to hide his own fear and insecurity.
- Jerk Jock: Hand in hand with Jerkass, he was even a member of the Roar Omega Roar fraternity until he got thrown out of the scare program.
- Jerk with a Heart of Gold: Over the course of the film, he outgrows this and becomes a much better person.
- Mistaken for Gay: It's implied that Celia thought this when Sulley turned up at her date with Mike.
- My God, What Have I Done?: In Monsters Inc, one of these prompts his Heel Realization as indicated in the above entry.
- Nice Guy: He becomes this by the end of Monsters University, and he's consistently polite in Monsters Inc.
- Papa Wolf: Steadily becomes this to Boo, big time.
- Power Walk: Leads the one in the first film.
- Pursue the Dream Job: Foregone Conclusion in Monsters University, since we know that Sully becomes MI's top scarer, but after getting kicked out of school he and Mikey are shown starting in the mail room, being janitors and cafeteria cooks, until finally a chance for a shot at the coveted scarer position becomes available.
- Red Oni, Blue Oni: Red oni to Mike's blue, which is more prominent in the prequel.
- The Slacker: In college, a contrast to Mike's nerdy behavior.
- Spell My Name with an "S": Unlike several other Sullivans with a nickname derived from their surname, this monster's name is not "Sully" but "Sulley".
- Super Strength: Prominently displayed during his fit of Unstoppable Rage when he goes saving Boo. The secret door and the scream extractor are no match for him.
- Technician vs. Performer: The Performer to Mike's Technician.
- Took a Level in Kindness: In Monsters University, he starts out as snob, but he develops into the kindhearted beast he is in Monsters, Inc.
- Unskilled, but Strong: In college, this is how Sulley, at first, impresses his teachers; he barely studies, but his natural abilities still make him a great scarer. However, Reality Ensues when he's properly evaluated, and he finds a single great roar can't account for every kid.
- Vitriolic Best Buds: His rivalry with Mike eventually becomes this kind of relationship. By the time the events of Monsters, Inc. happen, they regularly interact with each other through friendly banter.
- "Well Done, Son!" Guy: His relationship with his father is not even delved into but the expectations over his great family name is what drove his insecurities.
- Wham Line: To Mike regarding his scaring skills after he found out Sulley cheated in University:Sulley: What, am I gonna let a whole team lose because you don't have it?!"
- Wouldn't Hurt a Child: Even though he is the number one scarer at the company, he would never intentionally wish any real harm to a child, in contrast to Waternoose and Randall Boggs, even having a Heroic B.S.O.D. moment when he sees the frightened look on Boo's face after reluctantly operating the Scare Simulator at Waternoose's insistence.
- You Gotta Have Blue Hair: Fur, but it counts. With purple spots.
One of the series' two protagonists. He is a ball-shaped monster with light green skin, two small horns, and one gigantic eyeball.
- Adorkable: Mostly in Monsters University. His eager and peppy attitude during his first days at the university really makes you love the little guy.
- Ascended Extra: Deuteragonist and Plucky Comic Relief in the original movie, and the smart Protagonist in the prequel.
- Awesomeness by Analysis: His main talent as shown in Monsters University, which is what makes him an excellent scaring coach.
- Badass Bookworm: Pulled off, in Sulley's words, "the biggest scare the school has ever seen" simply by reading about the theory behind it and then applying the knowledge.
- Berserk Button: He gets upset whenever Sulley doesn't listen to his plans. It gets to the point that Mike assaults him after they are banished to the Himalayas.
- Brains and Brawn: The Brains to Sully's Brawn. Mike has an encyclopedic knowledge of all things scaring and uses that knowledge to coach Sully.
- Breakout Character: Went from Plucky Comic Relief Sidekick to being the protagonist of the prequel.
- Break the Cutie: He was very optimistic and Adorkable in the prequel until he got kicked out from the scare program, and had to train a loser team into masters to be able to be in the program he wanted. It didn't work for him since he lacked the spark everyone else in the team had, thus he was never educated as a real scarer.
- Butt-Monkey: Something which Boo finds hysterical.
- Cassandra Truth: When Mike goes back to the human world and flees from Randall alongside Sulley, Celia tosses herself at him out of anger and threatens to break up with him if he doesn't tell her the truth about what's going on. Mike explains the whole situation regarding the child and Randall and Waternoose's plot. Celia angrily expresses her disbelief, only for Boo to pop out and say Mike's name, causing Celia to let go of Mike in shock. She instantly believes him once Boo shows up.
- The Charmer: Shows this around Celia.
- Cyclops: He consists of a giant eye, a mouth underneath, and limbs.
- Deadpan Snarker: Has his moments, especially in Monsters, Inc..
- Determinator: MU shows this side of him. Nothing keeps him down.
- Deuteragonist: Of Monsters, Inc., though he gets his day in Monsters University.
- Drill Sergeant Nasty: Sulley and his morning work-out routine.
- Dude, Where's My Respect?: Suffers from this in the prequel. Everyone, even Oozma Kappa, consistently praises Sulley for looking like a scarer and will be the winning load of the team, when it's actually Mike carrying them all the way to the top. Sulley admits this at the end and praises Mike for it, though.
- Earn Your Happy Ending: Mike and Sulley get kicked off the scare program at Monsters University, take 6 misfits and turn them scarer material just for the chance to get back on. They end up expelled. Undeterred they decide to work their way up together at the ranks at Monsters Inc, from the mail-room up, until they become scarers. They then become the greatest scaring team on record. Only to uncover corruption at their workplace and inadvertently close down the business they worked so hard for. Fortunately they discovered a new means of power along the way. Fittingly, having lost his dream of being a scarer, it's Mike who now gets to take the lead and become one of the greats in his business.
- Establishing Character Moment: It isn't that clear at first, but in M.U., when a young Mike is mistakenly left behind in the bus, he seems too naive to take offense and instead rejoices over finding a nickel on the bus.
- Extraverted Nerd: As a college student.
- Foil: To Randall. In college, Mike and Randall were both nerdy and physically weak monsters who majored in Scaring. Randall had no faith in his scaring abilities, while Mike believed in himself to the point of overconfidence. Although Mike did get the best score in the Scare Games, he was expelled from MU and climbed up the ladders to become a scare assistant. Randall got the worst score in the Scare Games, but completed his education and became a Scarer.
- Four-Fingered Hands: Like several other monsters, probably to make the animation process easier.
- Growing Up Sucks: Sacrificed his life-long dream as an on-field Scarer. Even though he works his way into being treated like an equal to on-field Scarers, it doesn't make his past pains any less significant.
- Hard Work Hardly Works:
- Mike works very hard to prove himself capable of scaring in Monsters University, but his appearance and size don't help him in the field. And not only does his final effort of proving himself fail, it gets him expelled from MU.
- Also averted, as he and Sulley climb the ranks at Monsters Inc. until they become a full-fledged scare team. Mike's hard work ultimately brings him to the position as a scare coach rather than a scarer. Not only that but one of the top scarers in the company. Heck even before then, as Sulley and he were working their way up the company. They would in the top in a lot of simple fields such as Mail Clerk, Janitorial Work and Cafeteria Workers. Before ultimately landing a job as scarers, no doubt thanks to his coaching.
- The Heart: According to Sulley, he's the heart and soul of the team (Oozma Kappa).
- Heroic B.S.O.D.: He goes through this when Sulley tells him that he doesn't have what it takes to be a real scarer.
- Heterosexual Life-Partners: With Sulley and is his coach.
- Hidden Depths: What we learn about him in the original film never implies he's the book smart hard-working guy we see in the prequel.
- High Hopes, Zero Talent: In the prequel, Mike is constantly told he can never become a scarer because he simply isn't scary. It eventually turns out they're right.
- Horrifying Hero: Subverted, Mike is extremely knowledgable, but isn't very scary the same way Sully can be. Even when he attempted to do so on his own in the second film, none of the kids were scared of him, and in fact found him kind of adorable.
- Hypercompetent Sidekick: If you take the prequel into account, and being the Sidekick in the original, he is this.
- I Just Want to Be Special: In Monsters University. Unfortunately, his dream of becoming a scarer himself doesn't work out, but he does end up becoming a scare coach and lifelong friend to Sulley along the way. Though at the end of Monsters Inc he eventually finds himself uniquely suited to making kids laugh and helping end the energy crisis. It just took a long time for him to get there.
- Ink-Suit Actor: Even as an adorably inhuman monster, Mike could not be more Billy Crystal.
- Jerkass Has a Point: While he isn't that much of a Jerkass, he did make a good point about Sully becoming attached to Boo when he gives her a nickname.
- Jerk with a Heart of Gold: Thoroughly self-centered with a large ego to match, but a loyal friend to Sulley and Oozma Kappa anyhow. In the original, he also learns to warm up to Boo after he had been trying to get rid of her for the whole movie.
- The Lancer: How Mike views Sulley, even though he himself is the Lancer in Monsters, Inc. In Monsters University, it is more clear that Mike is The Smart Guy behind the duo.
- Large Ham: His personality can be quite dramatic, especially when he makes children laugh at the end of Monsters, Inc.
- Mistaken for Gay: Again, implied by Celia's reactions to Mike and Sulley's interactions on their date.
- Nice Hat: His blue MU baseball cap given to him by Frank McCay. There's also his blue Monsters, Inc. hardhat, which is arguably more iconic.
- Oculothorax: A giant eyeball, with a small mouth and spindly arms and legs.
- Official Couple: He gets together with Celia.
- Oh, Crap!: In Monsters University, after realizing that not only is the girl not scared of him, but he's stuck in a summer camp full of kids.
- Plucky Comic Relief: His role in Monsters, Inc..
- The Pollyanna: He was this to everyone's disapproval of him, until he got kicked out from the scaring program and could never be a scarer.
- Red Oni, Blue Oni: Blue oni to Sulley's red, which is more prominent in the prequel.
- Shorter Means Smarter: In college, Mike was one of the university's shortest monsters, and also among the smartest, most studious ones.
- Sidekick: Interestingly enough, Mike sees Sulley as his sidekick. In Monsters University, this is explained by showing Sulley as being very dependent on Mike's intellect and knowledge.
- Sickeningly Sweethearts: He and Celia frequently refer to each other by cheesy pet names. "Schmoopsie-Poo" for Celia and "Googly Bear" for Mike.
- The Smart Guy: Coaches Oozma Kappa into making them competent scarers, and later serves as Sulley's coach at Monsters Inc., who is now the best scarer in town.
- The Spock: To Sulley's McCoy and Randall's Kirk.
- The Strategist: Thanks to being book smart, Mike formulates plans and tactics that help out greatly during the second film, such as whipping Oozma Kappa into a fairly competent scaring team, and later when he and Sully get trapped in the human world, and he devises a plan to scare the rangers so that they can power the door from the human side. It also has the bonus of surprising Dean Hardscrabble, which had never been done before.
- Stepford Smiler: On his school field trip. He's acting really chipper and occasionally snarks about, but both when he ends up without a field trip buddy and when a classmate tells him he does not belong on a scare floor, it's clear how disheartened he is. Shades of this character trait are also present when he is older, especially in his reactions to Randall's treatment of him.
- Stock Audio Clip: Not as much as Boo, but his comical yelling has a tendency to be reused a few times.
- Technician vs. Performer: The Technician to Sulley's Performer.
- Tiny Guy, Huge Girl: Tiny Guy to Celia's Huge Girl.
- Took a Level in Kindness: An arc in MU. Joins Oozma Kappa for his own motives in order to revive his chances in the Scaring Program. After barely passing the first competition, he holds Oozma Kappa to a rather conforming (ineffective) method in the library challenge. But when he sees that the Oozmas have competence of their own, he becomes more appreciative of them and more accommodating to their special abilities.
- Tragic Dream: Worked from a very young age to become a scarer. Nobody truly believed in him and in the end it didn't work out, though he did become Sulley's best friend and discovers a true greatness in serving as scare coach along the way. Subverted when he turns out to have quite the talent for making children laugh and so he does become a great in his field of expertise after all. Albeit in a very different way than he'd thought.
- Vitriolic Best Buds: His rivalry with Sulley eventually becomes this kind of relationship. By the time the events of Monsters, Inc. happen, they regularly interact with each other through friendly banter.
- Weak, but Skilled: In college. In fact, it's the plot point in University; he's incredibly ambitious, which leads him to being extremely good in his grades (getting straight A's), but since he doesn't have that certain "spark" which is required for a scarer he never lives up to his dream and becomes Sulley's assistant in the sequel.
Voiced by: Mary Gibbs
A human toddler who doesn't fear any monster except for Randall. She accidentally enters the monster world when Sulley inspects her door at the Scare Floor.
- Baby Talk: Baby, gibberish vocabulary.
- Badass Adorable: She overcomes her fear of Randall at the very last second when she sees him about to give Sulley a Disney Villain Death, beating the crap out of him with her little fists and the help of a baseball bat.
- Berserker Tears: She actually cries just as much a kid her age would, but in the monster world, any loud noise from her can cause a blackout.
- Beware the Nice Ones: As Randall discovers, she can get angry when pushed too far.
- Blowing a Raspberry: Boo blows a raspberry at Randall, whose door got destroyed by Sulley and Mike so he couldn't come back.
- Catch-Phrase: "Kitty", "Mike Wazowski", and obviously..."Boo".
- Cheerful Child: A playful and happy Genki Girl.
- Cute Monster Girl: From Sulley's perspective.
- The Cutie: Extends to her voice actor. Her 'audition' tape was her babbling on camera for a while... but since she's only 3 years old, only the top of her head was visible.
- The Dreaded: To the monsters, due to her species being perceived as toxic.
- Enfant Terrible: Subverted...though the monsters believe that she can kill them with a single touch, she actually isn't dangerous.
- Genki Girl: Then again, she is only about three years old.
- Girlish Pigtails: Brown hair in pigtails.
- Heroic B.S.O.D.: When Sulley accidentally scares her.
- Iconic Outfit: Both her pink shirt and her purple monster costume.
- Killer Rabbit: How the monsters see her.
- Let's Get Dangerous!: When she beats Randall up.
- Little Miss Badass: A Badass Adorable 2-year-old child.
- Nerves of Steel: With the obvious exception of Randall and Sulley in one scene, Boo is not afraid of any monster she sees when she is let loose in their world. She doesn't seem the least bit bothered by their "odorant" either.
- Not Afraid of You Anymore: To Randall.
- Offscreen Teleportation: This little girl can get anywhere. Sully even compliments her on it.
- Only Known by Their Nickname: She is never referred to by her real name, Mary (which is also the name of her voice actress. According to the book based on the first film, her family name too is the same as that of her voice actress), which can be seen briefly on the crayon drawing she did for Sulley.
- Pink Means Feminine: She wears a pink shirt and pink hair elastics. Her door is white with pink flowers.
- Plucky Comic Relief: To a lesser extent than Mike.
- Skirt over Slacks: She wears a pink nightgown over purple pajama pants.
- Stock Audio Clip: Lots of her voice clips get reused throughout the movie.
- The Unintelligible: Speaks mostly in childish gibberish, save for words like "Kitty".
Voiced by: Steve Buscemi
The first film's main antagonist, and a supporting protagonist-turned antagonist in the prequel. He is a reptilian monster with both chameleon and snake-like features. He has purple scales, a blue tail, four arms, four legs, and three pink fronds on the top of his head. He also has the unique ability of becoming completely invisible.
- Adorkable: Not in the original movie, mind you, no way no how. We're talking about Monsters University. D'aww, look at those twiddling fingers and that cheeky little smile...
- Always Second Best: No matter how much effort he put into it, he'd never become a better scarer than Sulley (a fact Mr. Waternoose acknowledged to Randall, even after they banished Sulley and Mike for the sake of Randall's Evil Plan).
- Bad Boss: Often seen bossing around Fungus, his assistant.
- Big Bad: He's the mastermind behind the scream extractor. However, it's revealed that he's in a Big Bad Duumvirate with Waternoose.
- Big Bad Wannabe: Randall may be the Big Bad, but he only gets somewhere because his boss was so desperate to end the energy crisis that he decided to work with him.
- Bitch in Sheep's Clothing: Despite being Mike's roommate in college, he was something of a popularity seeker who joins up with ROR and participated in the prank to discredit his old friend's team, although peer pressure might have been a factor.
- Blind Without 'Em: Well, not necessarily blind, but after he abandons his glasses due to Mike suggesting he do so in order to make the most out of his camouflage ability, he keeps his eyes constantly squinted in order to see. By the time Monsters, Inc. comes around, he's still squinting.
- Card-Carrying Villain: He apparently knew what he was doing was evil, as he told Fungus not to fraternize with victims of his evil plot. Those were Fungus' words, not his own, so Fungus might have just been projecting his unease about the whole shady deal unto his view of Randall.
- Cheshire Cat Grin: It fits considering he is like a reptilian version of the Cheshire Cat.
- Creepy Centipedes: Looks part centipede, part chameleon.
- Demoted to Extra: In the prequel. While he frequently shows up in the beginning as Mike's studying partner, he does not do anything significant to the plot except joining Roar Omega Roar, forcing Mike to team up with Sulley.
- Disc-One Final Boss: He might have been defeated by Mike and Sulley. But all there is left at this point is Waternoose.
- The Dragon: In Monsters, Inc., he serves as Waternoose's second in command.
- Establishing Character Moment: In the prequel, he is introduced by happily shaking Mike's hand while saying that they'll be best friends, and then disappearing out of nowhere and apologising in embarrassment, showing his hopeful, but awkward personality. In Monsters, Inc., his first appearance consists of him confusing Mike by shutting his locker's door while being invisible, and then appearing out of nowhere to jump scare him. He then chuckles at Mike's fright and mockingly remarks that his tactic works on "little kids and little monsters".
- Evil Counterpart: To Sulley. In college Randall was nice and Mike's best friend, while Sulley was a jerk and Mike's rival. This changes over the course of the movie, and by the end their roles were completely reversed. By Monsters Inc we see Sulley as the Gentle Giant best friend of Mike and Randall as the evil arch-rival who hates both of them.
- Evil Genius: Invents the Scream Extractor.
- Face–Heel Turn: He used to be a friend of Mike's in Monsters University, but decided to partner with Roar Omega Roar instead and swore revenge on Sullivan for accidentally ruining his scare simulation.
- Foil: To both Mike and Sulley
- In college, Mike and Randall were both nerdy and physically weak monsters who majored in Scaring. Randall had no faith in his scaring abilities, while Mike believed in himself to the point of overconfidence. Although Mike did get the best score in the Scare Games, he was expelled from MU and climbed up the ladders to become a scare assistant. Randall got the worst score in the Scare Games, but completed his education and became a Scarer.
- Sulley and Randall are the two best Scarers of the company, got their scaring education at Monsters University and had the same Scaring 101 class. However, Sulley is a mammalian monster while Randall is reptilian. His color scheme is primarily blue with a bit of purple while it’s the opposite for Randall. Sulley’s strengths involve charging in at brute force while Randall has to sneak around using his invisibility to be physically effective. Sulley is sociable in both his college and adult years, and was more of a jock in college. Randall was always isolated from most monsters and was a nerd in his academic days. Sulley was an arrogant jerk in college who got kicked out of Roar Omega Roar for his poor grades. He had an intense rivalry with Mike, but eventually softened up to him and weaker monsters. However, he ended up expelled from MU, and humbled up after becoming a Scarer by climbing up the ladders at Monsters, Inc. Randall was sweet and self-deprecating in college, and got kicked out of Roar Omega Roar for his poor performance in the final round of the Scare Games. While Randall still continued to study and became a Scarer after graduation from MU, he grew to resent other monsters, especially Sulley and Mike, the latter being his closest friend prior to the Scare Games, and his mindset started to become fuelled by his vices.
- Freudian Excuse: Averted. He starts out genuinely nice and kind, but nothing awful happens to him in the slightest, and his Start of Darkness was still his own choice. No tragic backstory for you...
- From Nobody to Nightmare: As University shows, he turns into this.
- Geek Physiques: In his college years, Randall was still scrawny, but he also had huge glasses and some of his scales are coloured in a way that implies that there are his equivalent to acne.
- Glass Cannon: He's pretty strong, and his invisibility is a great help, as shown in his fight with Sulley. Sulley couldn't even touch him until Mike revealed his location by hitting him with a snowball. But once that happened, all it took was one backhand to take him down.
- Green-Eyed Monster: Not only is he literally a monster with green eyes, but he is also extremely envious of Sulley's success. Randall might easily outrank all of the other Scarers in his floor, and perhaps the entire company, but he is never satisfied due to Sulley barely beating him every time. It's implied that his envy is what fuels his desire to go with his Scream Extractor plan
- Hollywood Chameleon: He can practically turn invisible. Justified as he's clearly not meant to be an actual chameleon.
- I Just Want to Be Special: In college he was a shy student who really wanted to befriend the cool kids.
- I Just Want to Have Friends: In college. Preferably if they're cool.
- Ink-Suit Actor: Hard to look at him while talking and not remember Buscemi.
- I Was Beaten by a Girl: He is beaten up by Boo.
- Invisibility: Given he can change himself to the colors of the environment.
- Jerkass: Randall is an impatient and bitter jerk who doesn't show any respect for any other character, not even his boss, who decides to work with him out of desperation. He frequently intimidates and threatens his assistant, Fungus, is progressively crueller and snider to Sulley as the story progresses out of mere envy, and displays sadistic enjoyment out of tormenting Mike, seeing Mike and Sulley getting banished and possibly torturing Boo to death.
- Large Ham: Can be quite dramatic at times.
- Laser-Guided Karma: In the prequel, he joins with his and other fraternities to pull a nasty prank against OK in their party to make them into "adorable monsters". Later in the final round of Scare games, he accidentally camouflages the heart motif from the scare simulator room over his whole body, which turned him into an "adorable monster" himself. Even his fraternity captain has no qualms in mocking him for this.
- Last-Name Basis: Refers to Sulley and Mike by their last names out of antagonism. Especially since he referred to Mike by his first name in Monsters University, but never referred to Sulley by his first name or nickname.
- Lean and Mean: Just compare him to Sulley or most of the other scarers who all seem big and muscular.
- Lizard Folk: He resembles a lizard.
- Mean Character, Nice Actor: Implied by the Hilarious Outtakes, where he comments that he looks good in a suit after a coworker pulls a prank on him during filming.
- Mix-and-Match Critter: Randall resembles both a chameleon and a snake.
- Multi-Armed and Dangerous: Subverted. He has multiple arms, but they are not the reason why he is so dangerous.
- Narcissist: In one scene, we see him checking himself out in a mirror.
- Nerd: In college, at least for the first half of the film. It can be assumed that he was this in high school, too.
- Nerd Glasses: Sadly, he drops them within a minute of his first appearance under Mike's advisement.
- Not So Well-Intentioned Extremist: He claims that he's going to revolutionize the scaring industry, but in fact he's only doing it for personal recognition.
- Only Known by Their Nickname: In Monsters University he's called "Randy".
- Out of Focus: The main antagonist of the first film, a relatively minor character in the prequel. However, aside from Sulley and Mike, he's the only character who appears in both movies.
- Power Walk: Participates in the one found in the first film.
- Psycho for Hire: Under orders from his boss, he builds a horrific machine that sucks the screams out of human children. While Waternoose at least has the motive of keeping his company afloat and providing energy to Montropolis, Randall has no motive except to satisfy his own resentment over always being passed over in favor of Sulley, a college dropout who patiently worked his way to the top of the scaring game.
- Reptiles Are Abhorrent: An interesting combination of traits. Chameleons typically don't fall victim to this trope, but he also resembles a snake.
- The Rival: To Sulley ever since university.
- Smug Snake: Figuratively and literally! He has a very high opinion of himself while simultaneously constantly being in Sulley's shadow and looks like an actual snake.
- Social Climber: In Monsters University he was one of these, ditching Mike at the first opportunity to hang with the cool teens.
- Sore Loser: In Monsters University, his loss to Sulley in the final event of the Scare Games gets him mocked in front of the school (he got the lowest score of his teammates), lost him all his friends, and served as a catalyst for his resentment of him in Monsters Inc..
- Spared by the Adaptation: The Boom! Studios comic and the Scream Arena video game show that he survived the movie and got back to Monstropolis.
- Start of Darkness: In Monsters University, he slowly turned from a nervous character who was close friends with Mike to a resentful foe who is the arch-nemesis of Sulley and Mike.
- The Starscream: It's hinted that he plans on backstabbing Waternoose after his Evil Plan succeeds.
- Took a Level in Jerkass: It says a lot about someone when they're willing to casually murder their university dorm mate.
- Torture Technician: Invents a horrific machine that will literally suck out children's voices.
- Unknown Rival: Mike thinks of him as a competitor, while Sulley just thinks of him as a colleague. Randall, meanwhile, sees them as his adversaries.
- Used to Be a Sweet Kid: He starts out being very polite, kind and supportive to Mike, and he seems to genuinely value their friendship, but he's led astray by his own desire for personal status. Eventually, he ends up joining the most high-up fraternity in a bid to become "cool", ending up as an adversary in the Games. When he's (accidentally) publicly humiliated by Sulley in the last Game, he develops his bitter resentment.
- Vertebrate with Extra Limbs: Randall resembles both a snake and a lizard. He also happens to have four arms and four legs.
- Villainous Breakdown: After Mr. Waternoose tells Randall he will never amount to Sulley, he growls at him and forces him to accept his plan. Then when Sulley destroys and throws the Scream Extractor at Randall, Mr. Waternoose, and Fungus and saves Boo, Randall loses it and tries to kill Sulley (and was prepared to do so, even before Mr. Waternoose told him to).
- We Used to Be Friends: He used to be Mike's roommate and friend in Monster's University before deciding to side against him.
- Would Hurt a Child: His plan may not have specifically aimed at killing children, but the results of the Scream Extractor seem anything but harmless.
Monsters Inc. Staff
Henry J. Waternoose III
Voiced by: James Coburn
An elderly, grey-skinned, overweight monster with five eyes, seven digits on both hands, and six crab-like legs. He is the CEO of the eponymous company, a retired Scarer, Sulley's mentor, and the boss of every character who works for the company. There's more to it than what he appears to be, however...
- Affably Evil: He's pleasant, reasonable, and has a good sense of humor. Too bad about the whole 'kidnaps children and extracts their screams' thing.
- Big Bad Friend: Friendly enough that he genuinely didn't want to banish Mike and Sully (especially Sully) and even after they've gone defends Sully's reputation and snaps at Randall for insulting him. This didn't stop him from going through with all of it.
- Big Good: The benevolent CEO of Monsters Inc., Sully trusts him enough to reveal Randall's treason. Except that Waternoose is working with Randall in a Big Bad Duumvirate.
- Broken Pedestal: For Sulley when he reveals himself as a traitor despite considering them best friends.
- Character Outlives Actor: James Coburn died in 2002. Waternoose cameos in Monsters University only in a flashback picture (with an afro!) holding Sulley's hand.
- Despair Event Horizon: He is desperate to end his company's energy crises.
- Engineered Public Confession: Sulley and Mike work together to entrap him, using the scare simulator as their medium.
- Extra Eyes: Waternoose has five of them.
- First-Name Basis: The only one in the movie to address Sully by his first name James.
- Four-Fingered Hands: He has seven fingers on his hands.
- Funny Afro: Yes, he has this in the prequel! Well, only shown briefly in photograph, however, when he welcomed Sulley and Mike as the newest Scarer team in his company.
- The Guards Must Be Crazy: When Mike informs him about the obviously fictional "Bring an Obscure Relative to Work Day", he simply says, "Must've missed the memo."
- Hoist by His Own Petard: A minor and somewhat humorous example early in the film: after the 23-19 on the Scarefloor, it's shown that even he gets scared when Sulley practices the Waternoose Jump and Growl on him. This one is Played for Laughs—even he knows that Sulley is a good enough scarer to get him with a scaring technique that he himself had perfected, and he considers it an admirable quality.
- Honest Corporate Executive: He seems to be reasonable in making sure that his company doesn't go in the red. However, it's eventually subverted when he reveals himself to be a Corrupt Corporate Executive.
- I Did What I Had to Do: He had to banish Sulley and Mike because of Randall's actions.
- Intergenerational Friendship: Between him and Sulley.
- Knight Templar: Waternoose wants to save his family business and Monstropolis from collapse due to a power shortage. His "solution" drives him into would-be child slaughterer.
- Large Ham: He has an affable and boisterious personality, especially when he's excited.
- Mix-and-Match Critter: The most notable one in the movie, Waternoose has been described by several of the filmmakers as a cross between a crab and a spider.
- The Mentor: Implied to be such for Sulley, since he helped the latter become the company's top scarer. Waternoose is sincerely despondent when he has to get rid of him, and in the climax Sulley quite truly hopes he can convince him not to go through with the plan.
- The Mole: He and Randall are in charge of kidnapping children and made up the "poisonous human" superstition for the sake of keeping the company up and running to power Monstropolis.
- Put on a Bus: To near literal levels. The CDA agents place him in their personal vehicle when they arrest him and drive away from the factory. Waternoose also does not appear in Monsters University aside from a cameo in a photo despite arguably being as important as Sulley, Mike, Boo, and Randall.
- Reasonable Authority Figure: He's always reasonable to listen to his employees, especially Sulley. Or so it originally seems...
- Spider People: His design seems to be based on a mix of 'spider' and 'crab'.
- Tragic Villain: The company of his father and his father's father is in hard times, so he must act to save it no matter how immoral his plan might happen to be.
- Treacherous Advisor: Waternoose is revealed to have been behind the conspiracy all along.
- Utopia Justifies the Means: He just wants to save his city from an energy crisis.
- Villainous Breakdown: He loses his compusure towards the end of the film to the point that he reveals his intentions to kidnap children so that he can help his company.
- Walking Spoiler: As you can see, it's just hard to discuss him without mentioning a huge twist that occurs two-thirds into the movie.
- Well-Intentioned Extremist: He just wanted to solve the energy crisis and save his family company... by kidnapping children and draining energy out of them through cruel ways instead of a short scare.
- What the Hell, Hero?: He calls Sulley out at the end of the film for destroying Monsters, Inc. while being arrested.
- Would Hurt a Child: The plan involving him and Randall may not have specifically aimed at killing children, but the results of the Scream Extractor seem anything but harmless. Just ask Fungus.
Voiced by: Jennifer Tilly
A tall and slender, pink-skinned, and fairly humanoid monster with Gorgon-like features. She has one eye, five purple rattlesnakes that act as her hair, five tentacles as legs, and wears a green, scaly skirt. She works as the receptionist for Monsters, Inc. and is Mike's girlfriend.
- Barefoot Cartoon Animal: In a variation, she has tentacles rather than feet.
- The Cameo: She makes an appearance in Mike's locker at the end of the prequel. A photo of her appears with her phone number and a note telling Mike to call her.
- Cone of Shame: Oh yes, she's also subjected into wearing one after her date is ruined because of the 835 call. Even each of her snake hair are also subjected into this. No wonder she's angry at Mike.
- Cute Monster Girl: A cute female monster with one eye and purple snakes as hair.
- Cyclops: Although her "girls" have eyes of their own.
- Dangerously Short Skirt: She wears a skirt with her outfit, which exposes her long lower tentacles.
- Everything's Squishier with Cephalopods: Downplayed. She has tentacles, but she doesn't resemble an octopus or a squid.
- Gorgeous Gorgon: A gorgon with very playful snakes as hair.
- Laugh of Love: She giggles upon learning that Mike was able to get a reservation at Harryhausen's for their evening date.
- Meaningful Name: She's a cecaelia, after all.
- Ms. Fanservice: She has quite the busty hourglass figure for a monster.
- Official Couple: With Mike.
- Pink Means Feminine: She is a very feminine monster with pink skin.
- Satellite Love Interest: Aside from being Mike's love interest and the company secretary, she doesn't have much characterization. On her date with Mike they don't really talk about anything but their relationship and it is difficult to see why he likes her so much, aside from the obvious. Not even the prequel bothers to tell us how they first met, as she didn't attend in Monsters University just like him or at least, possibly, not in the same year as him. She's only shown briefly as a photograph after Mike begins to work in Monsters, Inc. and starts dating her.
- She's Got Legs: Her usual outfit shows off her lower tentacles.
- Tiny Guy, Huge Girl: Huge Girl to Mike's Tiny Guy.
- Tsundere: Celia is Type B, with a sweet "deredere" default.
- Vertebrate with Extra Limbs: She has five legs.
- Woman Scorned: She really starts to lose her cool when her date with Mike is ruined. At least up until they reconcile.
Voiced by: Bob Peterson
An elderly, bespectacled, slug-like monster with yellow skin, grey hair who wears a red shirt. She arranges the paperwork for the Scare Assistants, most notably those that work on Scare Floor F. It turns out that she is Agent number 1 of the CDA, who started working undercover at Monsters, Inc. two and a half years ago prior to the film's events to uncover a rumoured conspiracy regarding the company.
- Big Good: Number 1 agent of CDA who was trying to capture the guy who they suspected committed crimes at MI, aka Waternoose.
- Chekhov's Gunman: Appears at the end to reveal herself as the Reverse Mole.
- The Cameo: Shows up as head of the CDA after Mike and Sulley's trip to the human world in Monsters University, telling them that she's always watching.
- ClerkFrom DVD bonus material: "The pink copy [of your carbonless copy paper scare receipt] goes to accounts receivable. The fuchsia copy goes to purchasing. Ivory goes to your immediate supervisor. And I! Get! The goldenrod! Goldenrod!"
- Cool Old Lady: Who knew that behind a boring and sarcastic clerk, was actually a reasonable leader of this universe's equivalent of The Men in Black?
- She counts in the Hilarious Outtakes too due to her constantly messing with the filming for laughs.
- Deadpan Snarker: "Your stunned silence is very reassuring."
- Foreshadowing: She stoically closes her window when the CDA makes their first appearance.
- The Gadfly: The outtakes in the credits portray her as this on-set.
- Late-Arrival Spoiler: Watching Monsters University before Monsters, Inc. will spoil the fact that Roz is a CDA agent.
- Non-Mammalian Hair: A large slug-like monster with a tuft of hair on her head.
- Only One Name: One of the few named monsters without a confirmed full name.
- Reasonable Authority Figure: In spite of being the head of an organization that is ridiculously paranoid in dealing with humans and hearing the many false horror stories about them, Roz's first inclination upon meeting Boo is to send her safely back to the human world.Sully: I just...want to send her home.Roz: Very good.
- Reverse Mole: It turns out that she is the Agent #001 of the CDA.
Voiced by: Frank Oz
A pill-shaped, bespectacled, three-eyed monster with chicken-like legs, red skin, and an orange fin on his back. He works as Randall's assistant and is a supporting antagonist.
- Anti-Villain: He's only a "bad guy" for being Randall's assistant.
- Butt-Monkey: From Randall - every appearance of his involves him getting threatened, beat on, or otherwise dumped upon by Randall in some way.
- Cephalothorax: Like Mike and many other small monsters, his head and his body are pretty much the same thing.
- Chuck Cunningham Syndrome: Although almost every prominent character in the first film (aside from Mike, Sulley, and Randall) simply appears as a cameo in Monsters University, Fungus is unfortunately one of the rare exceptions. He does not appear in the prequel in any way.
- Extra Eyes: He has three of them.
- Extreme Doormat: Always does what Randall wants him to do out of fear. He never stands up to his boss, and Fungus is not involved in Randall's defeat whatsoever. When his coworker gets banished, Fungus' proper reaction is never seen.
- Four-Fingered Hands: Like several other monsters.
- Last-Name Basis: Calls Mike by his last name. This also applies to Fungus himself, who is never called by his apparent given name of Jeff.
- Minion with an F in Evil: Randall's cowardly, not so evil henchman.
- Nice Hat: Fungus is never seen without the blue Monsters, Inc. hardhat aside from one singular frame.
- Punch-Clock Villain: It's hinted at several points that he only works for Randall because he's genuinely afraid of him. Given his treatment at Randall's hands, it's easy to see why he's afraid.
- Throw the Dog a Bone: When the factory goes from scares to laughs, Fungus really enjoys the change.
Voiced by: Sam Black
A large monster with orange fur, yellow stripes, and a singular horn on his forehead. He works as a Scarer for Scare Floor F, and is the victim of a series of accidents regarding human accessories.
- Butt-Monkey: Victim of two 2319 calls, the first one leaving him shorn and sporting a Cone of Shame for the rest of the movie. He's also the one who's tested for cheating with anti-poison gel in the prequel, earning him a puffed-up leg.
- The Cameo: George appears in the Monsters University as a member of the fraternity Jaws Theta Chi. He also appears at the end of movie when Mike and Sulley start their first day as a scare team.
- Cone of Shame: Infamously wears one after getting his fur shaved and decontaminated by the CDA.
- The Dog Bites Back: Near the end, he's had enough and just pushes his co-worker into the door before he can be "sanitised" again.
- Dumb Jock: In M.U., he was part the not very bright Jaws Theta Chi material.
- Four-Fingered Hands: Like several other monsters.
- Horned Humanoid: As human-like as a monster can get, and has a horn.
- Iconic Item: You will very rarely find a piece of merchandise with George Sanderson on it that does not feature the infamous white sock on his back. Even in his official artwork, once the model rotates, has the sock stuck on his back.
- Jerk Jock: Subverted. He was part of the Jaws Theta Chi, but during the scene of Oozma Kappa's humiliation at the ROR house, he is the only member of his frat who looks distraught at what's going on. Word of God says, "he's a good kid in the wrong frat."
- Power Walk: Is one of the participants of the one found in the first film.
- Phrase Catcher: "2319! We have a 2319!"
- Running Gag: Him coming into contact with human items and his assistant Charlie panicking about it.
Voiced by: Bonnie Hunt
A pinkish-orange snakelike monster with fins attached to back of her eyes (which are on stalks), who works as a supervisor of the Scare Simulator, where potential Scarers try out the skills.
- Being Personal Isn't Professional: The reason she refuses to call Bile by his first name.
- The Cameo: She makes a cameo during the ending montage of Monsters University.
- Career Versus Man: implied. Her name indicates she’s unmarried, but has a successful career.
- Establishing Character Moment: The very first view we have of her is her with her head in her hands after Bile’s terrible performance.
- True Neutral: We never discover how much she actually knew about Waternoose’s plot.
- Sassy Secretary: Not quite a secretary, but definitely sassy.
- Snake People: She resembles an anthropomorphic snake.
- Surrounded by Idiots: She expresses frustration towards Bile for his poor performance, as well as her pupils for failing to explain what Bile did wrong.
- Sugar and Ice Personality: Comes off as cold at first, but enthusiastically claps for Sulley when he gives his demonstration.
Smitty and Needleman
Voiced by: Dan Gerson
A pair of teenage, geeky monsters with gawky voices that frequently crack. They work as maintenance workers at Monsters, Inc. and admire the Scarers, especially Sulley. Smitty is the short and stout, slug-like one with brown fin-like hair, braces, khaki green skin, and four arms. Needleman is the taller and slim one, with a brown and beige body, a large, round brown nose, and a general lanky physique.
- Ascended Extra: On a meta level. Despite being minor characters in the film that have little relevance to the plot, they are amongst the most frequently seen Monsters, Inc. representatives in the Disney Parks. Needleman was even part of the Monsters, Inc. section of the Pixar Play Parade before it was revamped to accommodate the release of Monsters University.
- Adorkable: Their nerdy ways and their admiration for Sulley and the other Scarers can be seen as endearing.
- Chuck Cunningham Syndrome: Alongside Boo and Fungus, they are two of the few characters to be prominent in the first film in some way that do not appear in any form in the prequel. However, they are teenagers, so when Mike, Sulley, Randall, and George were in college, they were only babies at most.
- Fat and Skinny: Smitty is the Fat to Needleman's Skinny.
- Four-Fingered Hands: Both of them have those.
- Heterosexual Life-Partners: Considering how they never interact with anyone else on their own but themselves, they clearly have a really close relationship.
- Man Child: Both of them act childish, but it's understandable because they're not adults yet. Needleman is a special case, since according to a conversation they have, his mom still punishes him by sending him to his room.
- Nice Hat: Like several employees, they are always seen wearing the blue Monsters, Inc hardhat.
- Only One Name: They are one of the few named characters that are only known by one name, and it is unconfirmed if they go by their surnames, given names, or nicknames.
- Plucky Comic Relief: All of their scenes are meant to provide humour, even in more tense ones like Sulley mistaking the fake eye stalk in the trash compactor for Boo.
- Those Two Guys: They're never seen apart, they have similar voices, and they never interact individually with characters that are not each other.
- Vertebrate with Extra Limbs: Smitty has four arms.
Voiced by: Phil Proctor
A turquoise monster with snail-like eyes and seven tentacle limbs (five of them being legs) that works as George's scare assistant.
- The Cameo: His younger self appears at the end of Monsters University, where he is seen talking to George on the scare floor.
- Catchphrase: "2319! We have a 2319!"
- Everything's Squishier with Cephalopods: His limbs are tentacles.
- Hoist by His Own Petard: On the third time he attempts to call the CDA to decontaminate George, the latter gets fed up and picks him up, shoves the human sock inside his mouth, and tosses him through the Nepali door.
- Mix-and-Match Critter: He looks like a hybrid between a snail and a squid.
- Nice Hat: He wears a blue Monsters, Inc. hardhat.
- Only One Name: Although some sources claim he shares his voice actor's surname.
- Plucky Comic Relief: His only purpose is to instigate the 2319 gag.
- Running Gag: George coming into contact with human items and him panicking about it.
- Vertebrate with Extra Limbs: He has five legs.
Thaddeus "Phlegm" Bile
Voiced by: Jeff Pidgeon
The very first monster seen in the movie. He has a bloated physique, a greyish-blue colour scheme, an Ankylosaurus tail, several pink spikes on his body, and four pink tentacle-like arms. He is a trainee Scarer who is very clumsy in his attempts at scaring children.
- Chuck Cunningham Syndrome: He does not appear in the prequel, nor is he mentioned.
- Establishing Character Moment: In his first scene, he almost successfully scares the robot child, but its screams scare him too, making him trip over several toys in the room.
- Epic Fail: Not only does he keep the door open when he enters the robot child's room, but he trips on a soccer ball, a skateboard, and lands on a bunch of jacks, making him scream in pain.
- Throw the Dog a Bone: He gets an actual job at Monsters, Inc. once the company switches from screams to laughter.
- Vertebrate with Extra Limbs: He has four arms.
Voiced by: Steve Susskind
A humanoid monster with red skin, blue stripes around his body, vertical spikes that resemble hair, and seven digits on both hands. He works as the supervisor for Scare Floor F, and announces when scaring starts and when it ends.
- Chuck Cunningham Syndrome: He does not appear in the prequel, not even in one of the photos in the montage at the end.
- Four-Fingered Hands: He has seven digits on his hands.
- Horned Humanoid: One of the most blatant human-like monsters, who also has a bunch of horns that serve as "hair."
- Nice Guy: He is very amicable, especially towards Sulley.
Voiced by: Joe Ranft (Claws), unknown (Lanky & Ricky)
Background characters with little to no actual purpose to the story. All of the other Scarers seen in the film work on Scare Floor F alongside Sulley, Mike, Randall, Fungus, George, and Charlie.
- The Cameo: All of them appear during the credits of Monsters University, in their own Scare Cards, with the exception of Harley Gerson (the armless, orange one with a large jaw).
- Cowardly Lion: All of them panic upon seeing Boo at the restaurant. Harley is the worst case. Bonus features on the DVD claim that Harley is scared of dogs, cats, and squeeze toys.
- Extra Eyes: Ted Pauley, the purple monster with gigantic, apelike fists, has sixteen removable eyes. His cousin, Joe “JJ” Ranft has three.
- Everything's Squishier with Cephalopods: Rivera, the tall and slender monster with orange skin and eyes on stalks, whose limbs are tentacles, and Harry “Bud” Luckey, whose appearance consists of a head/body covered in purple fur and dark turquoise tentacles.
- Four-Fingered Hands: All of them with fingers have those.
- Meaningful Name: Pete "Claws" Ward, a blue, crocodile-like monster with a retractable set of claws, Nicholas “Lanky” Schmidt, a pink monster with very long limbs, Bob "Dentures" Peterson, a light blue dinosaur-like monster with a removable set of sharp teeth, and Augustus “Spike” Jones, a red, slug-like monster with a set of retractable spikes on his back.
- Power Walk: Alongside Sulley, Randall, and George, they participate in one when they enter the scare floor.
- Reptiles Are Abhorrent: Bob Peterson and "Claws" Ward obviously try to project this to kids that they scare.
- Shout-Out: With the exception of Ricky Plesuski, all of these monsters are named after Pixar employees.
- Vertebrate with Extra Limbs: Rivera has six arms and four legs, Ricky (the green one with eyes on stalks and a large mouth for a body) has eight, crab-like legs, and Bud Luckey simply has six limbs.
- The Voiceless: With the exception of Claws, Ricky, and Lanky, none of them say a word throughout the movie. Although the rest of them (except JJ Ranft) make brief, but clear noises throughout the film.
Voiced by: unknown (Chuck, Frank, and Betty)
Background characters who work as scare assistants on Scare Floor F.
- Cyclops: Frank, a green, four-armed monster with a ruff of brown fur, has one singular eyeball on a stalk. Harley's assistant, whose body consists of a turquoise eye on a stalk and teal, crab-like legs, also counts.
- Cephalothorax: Betty, a blue pill-shaped monster, and Ricky's unnamed assistant, a green, Picasso-faced monster.
- Extra Eyes: Two slug-like monsters, one yellow and one red, have five eyes. Ricky's assistant has three eyes. Waxford, Spike's assistant, is a green monster with small tentacle limbs and five eyes on stalks.
- Four-Fingered Hands: Frank, Chuck, Betty, and Ricky's assistant have those.
- Nice Hat: All of them wear the blue Monsters, Inc. hardhat.
- Two Girls to a Team: Betty and Marge,a pink starfish-like monster, are the only female employees in the movie to work on a scare floor.
- Vertebrate with Extra Limbs: Frank, with his four arms, and Chuck, a pinkish-beige toad-like monster with four arms.
- The Voiceless: With the exception of Frank, Betty, and Chuck, none of them say a word throughout the movie.
Voiced by: John Ratzenberger
The famous white-furred monster of Himalayan folklore, whose presence in the human world is apparently due to the monster world banishing him. He now spends his life living in a cave in the middle of a cold, snowy mountain, while making snow cones to pass the time.
- Bigfoot, Sasquatch and Yeti: His name is what he is.
- The Cameo: He used to work in the mail room at Monsters Inc. along with Mike and Sulley, and warns them that tampering with mail is a crime punishable by banishment.
- Four-Fingered Hands: Like several other monsters.
- Gentle Giant: He's even bigger than Sulley.
- Large Ham: He is very expressive when he talks, especially when he tells stories about Bigfoot, or when he praises the Himalayas after Mike calls them a "frozen wasteland".
- Noodle Incident: Whatever got him banished to the Himalayas. It's implied he tampered with the Monsters Inc. mail. But how and why is never seen.
Short for "Child Detection Agency", this group of yellow Hazmat suit-wearing monsters has the responsibility of eliminating all traces of human objects present in the monster world. Their methods of decontamination are often painful, and they will take extreme measures to prevent the spreading of human toxicity.
- Cyclops: Some models imply that several CDA agents are among the many one-eyed inhabitants of Monstropolis.
- Decontamination Chamber: They use portable ones to decontaminate subjects that set off a 2319 or an 835.
- Extra Eyes: The visors on some models imply that some of them have three eyes, and perhaps more.
- The Faceless: All of them wear yellow bio-hazard suits, although because they're monsters, their body shapes vary quite a bit.
- Fast-Roping: Several CDA members enter the Scare Floor like this. During the Hilarious Outtakes one CDA agent accidentally splats against the window instead of opening it.
- Hazmat Suit: They all wear banana yellow ones.
- The Men in Black: They act as this to the Monster world.
- Multiple Head Case: One model represents the only two-headed monsters to be physically present in the movie.
- Overreacting Airport Security: The way they react to a 2319 or 835 alert is pretty damn over the top.
- Vertebrate with Extra Limbs: Several of them have four arms. One specific model has six arms.