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Voiced by Joel Murray
A middle age student and the founding member of Oozma Kappa fraternity.
- Cool Old Guy: He's a friendly, cheerful guy and welcomes Mike and Sulley into the frat with hot cocoa. He also beats Reggie Jacobs during the Scare Test segment of the Scare Games.
- Digging Yourself Deeper: See That Came Out Wrong below.
- Everything's Squishier with Cephalopods: His arms have suction cups not unlike those of an octopus.
- Intergenerational Friendship: Is friends with the other members of Oozma Kappa despite being old enough to be their dad. Actually becomes literal for Squishy when Don decides to marry Sheri.
- Nice Guy: Don is fatherly, accepting, gentle, and kind.
- Non-Mammalian Hair: Sort of. His "thinning hair" and mustache look like fins, much like many other students on campus.
- Team Dad: Starts out as one for Oozma Kappa and later on becomes one in a more literal sense for Squishy by getting engaged to his mom.
- That Came Out Wrong: His attempt at making Squishy feel less awkward about him becoming Squishy's stepfather.
- Wall Crawl: Don eventually learns to do this by utilizing the suction cups on his arms. He makes effective use of it during the last few rounds of the Scare Games.
Terri and Terry Perry
Voiced by Sean Hayes and Dave Foley
Two-headed monster with one eye on each head, four arms, and tentacles for legs.
- Conjoined Twins: They both have different personalities, appearances and voices but share the same body. Sadly for Mike, the Greek Council counts bodies, not heads.
- Cyclops: Both of them, individually
- Deadpan Snarker: Terry, in his and Terri's introduction scene.Terry: Hi, I'm Terry with a "y".Terri: And I'm Terri with an "i"! I'm a dance major!Terry: (laughs) And I'm not.
- A Degree in Useless: Terri is a dance major. But Terry doesn't cooperate.
- Foolish Sibling, Responsible Sibling: Terri is foolish while Terry is responsible.
- Gender-Blender Name: Terri is presumably male, but has a girl's name.
- Hidden Depths: The serious and cynical Terry can perform close-up magic.
- Humanoid Abomination: Both briefly make a shadow silhouette that resembles one during the final event in the Scare Games.
- Identical Twin ID Tag: Terri has a single straight upright horn, like an "I", while Terry has two slightly curved downward horns, like a "Y". Also, Terry is taller.
- Japanese Beetle Brothers: It probably wasn't intentional on the creators' part, but they fit the pattern perfectly.
- Keet: Terri, much to Terry's chagrin.
- Multiple Head Case: Mike tries to exploit it by passing them off as two members but Brock doesn't buy it. Lampshaded:Brock: Sorry, boss. We count bodies, not heads. That due counts as one.
- Nice Guy: In spite of their opposing personalities, both twins are well mannered and polite, and have deep, brotherly love for each other.
- Polar Opposite Twins: Terry is calm, cynical, and intellectual, while Terri is energetic, optimistic, and theatrical.
- Red Oni, Blue Oni: Terri is the red to Terry's blue.
- Sublime Rhyme: Terry and Terri Perry.
- Theme Twin Naming: Their names sound the same but use a letter similar to their respective horn designs.
Scott "Squishy" Squibbles
Voiced by Peter Sohn
A five-eyed jelly monster whose mother owns the fraternity house.
- Adorkable: Just look at him. It helps that he resembles Russell, who just so happens to be inspired by Squishy's voice actor, Peter Sohn.
- Alliterative Name: Scott Sebastian Squibblesnote . Also applies when using his nickname.
- Always Someone Better: It's not that evident at first, but he could count as this to Mike. Though conventionally shorter and cuter than Mike, he ends up becoming an on-field Scarer. This is to demonstrate that it wasn't exactly height and appearance that doomed Mike's dreams.
- Amazingly Embarrassing Parents: His mom, Sheri Squibbles.
- Chekhov's Skill: His tendency to sneak up on people early in the film serves as Foreshadowing, as he uses it to his advantage during the Scare Games.
- Disappeared Dad: Don later marries Sheri. Probably means his biological father left the picture a while ago.
- Establishing Character Moment: When introducing himself, he unintentionally startles Sulley, then rather childishly climbs into a rocking chair.
- Extra Eyes: Has five.
- Jump Scare: His tactic used in the final event of the Scare Games when an unsuspecting dummy turns around and finds him creepily staring at it.
- Keet: He is a very energective and excitable little fellow. He can still be stealthy when he wants to be.
- Manchild: While still living with his mom isn't that odd for many college-age students, him never staying up late and making wishes on ladybugs makes him rather childlike in an endearing way.
- Meaningful Rename: Somewhere after the end of the movie, his nickname got changed from "Squishy" to "Scary", as shown on his Scare Card during the credits.
- Nice Guy: Squishy is kind and sweet.
- Offscreen Teleportation: Later uses this to his advantage in the scare simulator challenge of the Scare Games. Overlaps with Stealth Hi/Bye. He never uses the stealthy exit, but hot damn he's got the "Stealth Hi" part down.
- Running Gag: Squishy repeatedly shows up from out of nowhere. Acts as a sort of Chekhov's Skill later in the Scare Games.Mike: We need to get you a bell.
- Stealth Expert: His natural skill is being unnervingly stealthy, which allows him to excel as a Scarer.
Voiced by Charlie Day
A purple furry monster with an arch shape and a questionable background.
- Cloud Cuckoolander: His appearance alone confuses the hell out of people.
- A Degree in Useless: He's studying New Age Philosophy.
- Having a Heart: "I have an extra toe. Not with me, of course."
- Mysterious Past: "The ultimate free spirit, Art is a mysterious monster with a questionable background."
- Never Going Back to Prison: When spotted by security in the Scare Factory, he completely freaks out at the thought of any legal punishment and screams that he can't go back to prison.
- New-Age Retro Hippie: He fits the mold quite perfectly. He studies "New Age Philosophy" and is overall quite the Cloud Cuckoo Lander and Plucky Comic Relief.
- Nice Guy: He has a good heart, but rather oblivious for the most part.
- Noodle Incident: Whatever got him in jail before.
- Only One Name: He is only ever referred to as "Art". Not even in the promotional material is he given any other names.
- Plucky Comic Relief: His main purpose in the movie is to provide humor with his hippie personality.
Roar Omega RoarA preppy fraternity comprised only of the cream of the crop in scare students, Roar Omega Roar has won the Scare Games several years running. Sulley was a member with them at the start of the semester until getting thrown out of the Scare Program. Randall Boggs becomes a member of the group for the Scare Games in the film.
Johnny Worthington III
Voiced by Nathan FillionThe confident President of Roar Omega Roar who is Mike Wazowski's rival.
- Expy: Basically Bradley Uppercrust III from An Extremely Goofy Movie if he were a monster.
- Everyone Has Standards: He won't recruit Sulley simply because he's a Sullivan. He insists Sulley also must have genuinely good grades in Scaring major.
- Faux Affably Evil: Not "evil", but jerkish. Any chumminess he displays only serves to underline how slimy he really is.
- Follow in My Footsteps: Never brought up in the movie proper, but in an interview with his voice actor, Nathan Fillion, he reveals that he sees Johnny as having been pushed by his father into becoming a high-achiever. Supported in the official artbook, where it's stated that Johnny is deathly afraid of failure.
- Graceful Loser: Possibly. His team, with the exception of Randall Boggs, doesn't appear to hold grudge against OK, the very fraternity they underestimate at the start of the Games, who defeated them in final round of Scare Games. He, to the very least, congratulates and tries to invite Sulley once again to his fraternity after their defeat from OK.
- High Collar of Doom: Well, Popped Collar of Jerkishness anyway.
- Horned Humanoid: He has an humanoid monster appearance but has two big horns on his head.
- Jerkass: His final line to Mike in the movie, right before they square off in the final Scare Games event, really sells an unwarranted emotional Gut Punch, especially as it's delivered in not his usual mocking tone, but with a grave air of calm, borderline sympathetic sincerity that only serves to make it more hurtful. Despite such, Mike remains undeterred.Johnny: Don't take the loss too hard. You never belonged here, anyway.
- Jerkass Has a Point: An unpleasant take where in spite of his brutal jerkishness, he is ultimately right that Oozma Kappa lack the traditional Scarer traits. This does leads to Oozma Kappa learning to become resourceful about their own seemingly benign traits to become Scarers. Lampshaded by Sully in a deleted scene:Mike: Tell them! That guy's a jerk! He's all wrong!Sully: You're right. He's a jerk...but I'm not so sure he's wrong.
- Jerk Jock: A monster version of the trope, but it's clear that he is the popular guy on campus who is thought as cool by everyone. Yet, he values academic performance as well as sports prowess.
- Karma Houdini: Other than losing the Scare Games, his mean-spirited actions aren't shown to have any consequences and it seemed he moved onto a decent career at Fear Co.
- He does get some retribution in the short Party Central.
- However, if you consider what happens in the original movie, Sulley changing Monsters Inc.'s M.O. from scaring kids to making them laugh (and the subsequent increased energy supply) would have easily outperformed the rest of the fear-based power companies, putting Johnny out of a job (Unless he knows how to make kids laugh, which is doubtful).
- Kick the Son of a Bitch: It's implied that he kicked out Randall of his fraternity after they lost in Scare Games, because Randall is the one who got the lowest score among them. He also mocks Randall when Randall accidentally camouflage hearts motif from the scare simulator room which turned him into an "adorable monster".
- The Nicknamer: Examples include "Killer", "Big Blue", "Bruiser", and "Grandpa". He also latches onto "Sulley" immediately when he's told that's his current conversation partner's preferred address. Which says a lot when you consider that Randall is just "Boggs" to him.
- Obviously Evil: His rather devilish appearance should be a big hint that he's not a nice guy.
- Opposing Sports Team: The closest thing the movie has to a main antagonist.
- Preppy Name: Not only he has a quite fancy family name that also shows him to be the third member with that name.
- Smug Snake: As great as he is at scaring, he is too overconfident on his skills and doesn't think Mike can compare to him.
- Villain with Good Publicity: Not that Johnny is legitimately a villain, but he is Mike's arch-nemesis who is loved and respected by pretty much everyone. But then again, who could blame him? Being the president of the top fraternity in the most prestigious university in the monster world and all.
Voiced by Bobby MoynihanA one-eyed crab monster that serves as the Vice President of Roar Omega Roar.
- Cyclops: Another one-eyed monster in the series.
- The Dragon: To Worthington.
- Giant Enemy Crab: He's not the biggest of the RORs, but he is much bigger than most normal crabs, and is an antagonist for Mike, Sulley, and the other Oozmas.
- Nice Hat: It's a ROR cap!
- Nice Job Fixing It, Villain!: If Chet hadn't casually mentioned to Mike after he and the rest of Roar Omega Roar humiliated them at a party that they weren't cut out "for the big leagues", Mike wouldn't have gotten the idea to take Sulley and the rest of the Oozma Kappa members to Monsters Inc. to cheer them up, show them that all kinds of monsters are scarers, and thus provide them the encouragement they needed to proceed forward in the Scare Games.
- Red Baron: We see in the credits that he is known as "The Scream".
- Speech Impediment: Speaks with a noticeable lisp.
An insect-like monster with four arms and pink eyes.
A dark green monster with three eyes and grass-like hair all over his body.
- The Brute: Johnny even refers to him as "Bruiser" when he lines up in the last round.
- Extra Eyes: Three eyes.
- The Klutz: He stumbles a bit during his turn in the Scare Simulator, affecting his score badly.
- Technicolor Eyes: Like Javier, Reggie has uncommon yellow sclerae instead of the more common white.
- The Voiceless: Reggie grunts and growls a lot at Don but never speaks a proper word.
A purple monster with two horns and vampire fangs who roars like a Wookiee.
- Fangs Are Evil: Chip's not really evil, but he does sport an impressive set of vampiric fangs.
Voiced by Aubrey Plaza
President of the Greek Council and announcer of the Scare Games.
- The Eeyore: Played with. She says discouraging words to Mike so he won't participate into Scare Games while she's also announcing Scare Games to Mike and many other students. This is opposed to what her partner Brock's doing, in which he says encouraging words instead. However, it's pretty much likely a case of Jerkass Has a Point, that Mike isn't scary, just like many other monsters have said.
- Extra Eyes: Has three eyes.
- Non-Mammalian Hair: Like Don, her hair looks more like fish fins or webs.
- Not So Stoic: After being half-asleep while commentating through most of the Scare Games, she goes ballisticly happy when Oozma Kappa wins the final event.
- Peek-a-Bangs: Has hair covering her rightmost eye.
- Red Oni, Blue Oni: The blue to Brock's red.
- Savvy Guy, Energetic Girl: Inverted. She's the Savvy Girl to Brock's Energetic Guy.
- Ship Tease: With Brock Pearson.
Voiced by Tyler Labine
The Greek Council's Vice-President and co-announcer for the Scare Games.
- Catch-Phrase: "THE SCARE GAMES!!!"
- '80s Hair: He has feathers on his head styled like a mullet.
- Feathered Fiend: Downplayed. He's a bird monster, but other than the fact that he's supposed to be scary, he's a pretty nice guy.
- Large Ham Announcer: He's one of the announcers for the Scare Games and he speaks in loud, dramatic tones.
- Mix-and-Match Critters: He looks like a giant purple chicken with the horns of a gazelle.
- No Indoor Voice: Inverted temporarily during one of the Scare Games events inside a library. Once the Oozma Kappa members make noise, though, he goes back to his normal level.
- Red Oni, Blue Oni: The red to Claire's blue.
- Savvy Guy, Energetic Girl: Inverted. He's the Energetic Guy to Claire's Savvy Girl.
- Ship Tease: With Claire Wheeler.
Voiced by Beth Behrs
A three-eyed pink monster with red hair who is the fearless President of Python Nu Kappa.
- Alpha Bitch: While she has very little characterizations, she's the closest example you can get in this universe.
- Establishing Character Moment: Carrie and PNK are introduced being wished good luck by Terry. Carrie responds in a cheery voice, "Thanks! We're going to rip you to pieces!", then flashes her Nightmare Face.
- Evil Redhead: to the very least, she is more than likely to be evil to human children, just like many other monsters in this universe. Also, see Manipulative Bitch below.
- Extra Eyes: Three.
- Horny Devils: She and the rest of the PNK sorority resemble succubi. Even more prevalent in their visual development artwork.
- Inexplicably Identical Individuals: All the PNK girls look identical, despite not being biologically related.
- Manipulative Bitch: She and her sorority are the ones who invite OK to the party, to makes them fall into a nasty prank. Some fans even believe that they, as well as all of Frat Row, had been in on the prank, when none of them had not been aware of it in the first place. This determines that the RORs fill this trope especially, and that the PNKs are, unfortunately, second it because of they were not aware the party was a prank.
- Nightmare Face: In a second, she can reveal red eyes and a mouth full of sharp teeth.
Voiced by Bill Hader
A slug student who attempts to get to all his classes.
Dean Abigail Hardscrabble
Voiced by Helen Mirren
The dean of the School of Scaring.
- Armor-Piercing Question: Gives one regarding Mike that Sully (despite starting to warm up to Mike) can't give a straight answer to.Hardscrabble: Do you think he's scary?
- Berserk Button: Surprisingly subverted. When her record-breaking scream canister is introduced, and summarily knocked over and broken, it seems as though Hardscrabble is about to enter Dissonant Serenity mode and tear Mike and Sulley a new one. But she doesn't. She's disappointed, but she never so much as raises her voice.
- Having said that, she does give both Mike and Sulley a "The Reason You Suck" Speech, instead of giving them a fair go in the scream simulator.
- Big Entrance: Loves doing these. Anytime she's shown flying into the scene, everyone noticeably becomes nervous and on edge. In particular, her introductory scene leaves absolutely NO room for discussion about her qualifications as a Scarer.
- Cool Old Lady: She's a Stern Teacher and Retired Badass, after all.
- Creepy Centipedes: Her bottom half.
- Dean Bitterman: She gets better.
- Establishing Character Moment: Her first scene has her swoop into the classroom, pull down all the curtains and make the room very dark, stand by her bust and trophy to show her earned credentials, and give a stern lecture about how she expects only great things and anyone substandard will fail.
- Expy: A bit of a Distaff Counterpart to Anton Ego from Ratatouille.
- According to an interview, Dean Hardscrabble takes much inspiration from Maleficent. The artists even gave her Maleficent-style horns at one point in development, but ultimately decided that this was going too far.
- Giant Flyer: Not humongous, but big enough to qualify.
- Good Is Not Nice: Has no respect for students she sees as "mediocre"... but once you prove you're great, she'll be the first to tell you so.
- Jerkass Has a Point: She and all other doubters are later proven undeniably right in telling Mike he's not scary. In addition, when she dresses down Mike and Sulley, both fail her hypothetical scenarios, Mike for the above reasons, and Sulley because he doesn't use his head when scaring, implying both Mike and Sulley only sped up their inevitable failure in the school.
- She has fair reason to bear a grudge against Mike and Sulley for breaking her canister and notably aims her disdain directly toward them rather than the rest of Oozma Kappa.
- Her extremely demanding requirements for being a scaring major also make sense in-universe. Being a scarer, according to everything the monster world understands, is incredibly dangerous. You don't want incompetents going into what is treated as an extremely dangerous environment.
- Not only dangerous for the scarers themselves, but, as she informs Sulley, a botched scaring expedition could literally lead to the end of civilization if the humans discover the Monster World.
- Kick the Dog: Although she stays rather reasonable in her strictness, she's not immune to those moments and even gently taunts Mike after Oozma Kappa's near-loss in the first round. Granted, her grudge against him is understandable, but her flaw is that her criticisms are more unpleasant than helpful.
- Large and in Charge: Towers over most of the other monsters. She can appear even larger by opening her wings and using her centipede half to gain height.
- Living Legend: Current holder of the All-Time Scare Record.
- Mix-and-Match Critters: A centipede-dragon-humanoid hybrid.
- Not So Stoic: She's the sternest, strictest, and most unflappable monster in the school. But when Mike and Sulley create a scream of such power that it not only activates a door from the human side, but fills up every scream canister in the laboratory until they and the door explode, she goes into wide-eyed shock. Later, as she bids them good luck in their future endeavors, she informs that she believes in them because they did the one thing she thought was impossible: surprising her.
- Obviously Evil: Come on, she's basically a black and red centipede/dragon hyrbid. Subverted though.
- Our Dragons Are Different: She has some dragon-like qualities, at least, including her reptilian facial features, horns and batlike wings.
- Reasonable Authority Figure: She holds a grudge against Mike and Sulley for breaking her scream canister and she's often unpleasant to Mike about his endeavors. Still, she manages to be reasonable since she enforces fair punishment and still permits them a chance of redemption at the Scare Games and does not let Oozma Kappa suffer for the actions of Mike and Sulley.
- Retired Badass: From her life as a Scarer.
- Sink-or-Swim Mentor: If you can't take the heat, get out of her school.
- Stern Teacher: She's more harsh than actually cruel and offers words of encouragement to Mike and Sulley as they leave MU.
- Tranquil Fury: When Mike and Sulley accidentally knock over and break her record making scare canister. She's surprisingly rather calm about it, stating it was fine as long as no one got hurt. Mike lampshades this...at least before she gives her impromptu tests to the two.
- Tough Love: This may be an interpretation of her behavior towards her students.
- Winged Humanoid: For a given definition of "humanoid".
Professor Derek Knight
Voiced by Alfred Molina
The teacher of Scaring 101.
- Cool Old Guy: Just like Dean Hardscrabble, he's a Stern Teacher and Retired Badass, after all.
- Everything's Better with Dinosaurs : Resembles a humanoid T-Rex with spiky scales as hair.
- Expy: Looks like a small Uragaan from Monster Hunter.
- Non-Mammalian Hair: His blunt spines on the top of his head resemble hair.
- Retired Badass: Not quite as much as Hardscrabble, but his Scare Card shown during the credits appears rather old in comparison to all the others, showing that he was a very successful Scarer before becoming a teacher.
- Stern Teacher: He gives off a strong no-nonsense vibe at first, but he is genuinely very impressed over Mike efforts and diligence.
Professor William Brandywine
Voiced by Greg Dykstra
The teacher for Scream Can Design 101.
- Creepy Monotone: Not creepy per-se, just very droll and disinterested sounding.
- Go Ye Heroes, Go and Die: He's not exactly the best at motivating his students on the first day of class.Brandywine: Some say scream canister design is dull, a waste of a monster's potential. [conspicuously long pause] Open your books to page 1.
- Palette Swap: According to the official artbook, his character model is the same as Don Carlton's but with yellow fur.
Voiced by: Marcia Wallace
An elderly female monster that works at the library at Monsters University.
- All There in the Manual: The promotional tie-in Monsters University Fearbook reveals that her name is "Margaret Gesner".
- Almighty Janitor: A terrifying giant octopus monster that... looks after a library?
- Berserk Button: Don't make the slightest noise in the library when she's around.
- Blind Without 'Em: An example that's actually played realistically.
- Disproportionate Retribution: To anyone who make a noise in her library as shown when a student make a scuffing noise as he's leaving a table, even though it wasn't intentional. She quickly grabbed him and threw him through an open skylight where he landed in a pond outside, showcasing what the participants of the games were in for if they were caught.
- Everything's Squishier with Cephalopods: The lower half of her body is a giant octopus.
- Mix-and-Match Critters: She's a slug and octopus hybrid.
Voiced by: Julia SweeneyA monster who is the mother of Scott Squibbles. She also owns the Oozma Kappa fraternity house.
- Alliterative Name: Sherri Squibbles.
- Amazingly Embarrassing Parents: She first appears in the middle of the OK initiation ceremony to do the laundry. Very loudly.
- Cool Old Lady: She enjoys listening to heavy metal and this short shows that she's very talented at Hacky Sack. And there's her demonstration of "door-jamming" in Party Central...
- Laugh of Love: When Don accidentally hugs Sherri and tries to get his tentacles unstuck, she giggles as she introduces herself, and they eventually get married.
"Frightening" Frank McCay
Voiced by: John KrasinskiA superstar Scarer on Scare Floor D at Monsters, Inc. who inspires Mike to want to be a Scarer.
- The Ace: Considered a superstar among Scarers.
- Everything's Squishier with Cephalopods
- Friend to All Children: Frank is the only one of the Scarers at MI that actually stopped to talk to Mike's class when they were visiting. He even gives Mike his trademark MU cap as a gift.
- Nice Hat: His trademark MU baseball cap, which he ends up giving it to Mike.
- Small Role, Big Impact: He only appears in the opening scene, but he leaves a huge impact on Mike and inspires him to pursue Scaring as a career. Mike's scaring style is greatly influenced by Frank's — for example, the technique of waking a child up by slowly scratching your claws against the bedpost.
Archie the Scare Pig