Meanwhile, Boggs, who is no longer on good terms with either of them, is concocting a plot to generate more energy using the Scream Extractor, a machine that requires the kidnapping of human children.
Amidst the chaos resulting from Boo's unknown presence, he discovers that Wazowski knows information about her, and they both agree to return her to a designated location.
Following several further plot events, Sulley and Wazowski successfully return Boo home, expel Boggs to the human world, and prove the orchestration of the scheme by Mr. Waternoose, the company's CEO, to Child Detection Agency (CDA) Agents.
Randall Boggs (voiced by Steve Buscemi in the film series, the tie-in video games for the first film and Monsters at Work,[2] Peter Kelamis in the Disney Infinity video game series, J.P. Manoux in Kingdom Hearts III, Piotr Michael in Disney Speedstorm) is a purple, eight-legged, salamander-headed, chameleon-like monster who can change his skin color to blend in with his surroundings.
Afterward, Randall is forcibly exiled to the human world and winds up in a mobile home where the inhabitants beat him senseless, thinking he is an alligator.
In Kingdom Hearts III, which takes place sometime after the film, he reappears to both Sulley and Mike's surprise, who claim that he was exiled for attempting to forcefully collect screams (for some reason, Waternoose is not mentioned despite his involvement in Randall's plot).
Roz (voiced by Bob Peterson) is a snail-like monster who is the key master and administrator of Scare Floor F. Near the end of the film, she is revealed to be Number One of the CDA Agents, having been on an undercover assignment to investigate the company and expose Randall and Waternoose's scheme.
CDA Agents are an assortment of different monsters in hazmat suits (variously voiced by Rodger Bumpass, Pete Docter, Bill Farmer, Teddy Newton, David Silverman, and Lee Unkrich) whose main job is to respond to any reported incidents of contact between monsters and children or their belongings, since it is believed that human objects are toxic.
They find the bag containing Boo that Mike and Sulley left behind at the restaurant, which trace them back to Monsters, Inc. where they end up searching the building.
Waternoose is arrested after his plot is exposed; the CDA Agents's undercover leader is revealed to be Roz, and she allows Sulley and Mike five minutes to return Boo to her world.
Henry J. Waternoose III (voiced by James Coburn)[2] is a spider-like monster with five eyes, seven claws on each hand, six crab-like legs, who wears a business suit.
However, Mr. Waternoose is distraught to learn that the impending energy crisis is increasing, due to many children being desensitized and being unable to be scared by monsters, which might put the company on the verge of being shut down.
After Sulley and Mike manage to find their way back to the monster world, they rescue Boo, destroy the Scream Extractor, defeat Randall, and trap him in the Everglades.
As he is being dragged away, Waternoose accuses Sulley of "destroying" the company and exacerbating the energy crisis before the CDA Agents locks him in a van.
In Monsters University, Waternoose makes a cameo on an image where he shakes hands with Sulley and Mike, who are being promoted as scare team members.
In the television series Monsters at Work, Celia gets promoted to floor supervisor by Mike when the board of directors puts him and Sulley in charge of the company.
In the end following Randall's defeat and Waternoose's arrest, Fungus is forgiven for his involvement and is now happily taking on a job as Mike's assistant and making children laugh to collect more power.
He was seen at the beginning of the movie botching his training by leaving the door open as well as being scared by the simulation child (voiced by Lisa Raggio) causing him to slip on a soccer ball and fall on some jacks.
Jerry Slugworth (voiced by Steve Susskind) is a red monster with blue strips on the center and thick maroon around his torso and legs, and seven fingers who works as a floor manager for Scare Floor F. Tony (voiced by Guido Quaroni) is a tall, slender orange monster with a moustache, four tentacles for arms and five shorter tentacles for legs.
He is a grocer that works at Tony's Grossery and was first seen telling Mike and Sulley that somebody is about to break the All-Scare Record and throws them blood oranges while wishing them the best of luck.
Ted is the largest monster in the movie; he is so big, only his elephant-like legs, covered with large, coarse brown scales, are shown at all.
Sulley says "good morning" up at him, he crows back, then the light turns green, and Ted stomps across the road, causing an earthquake with every step.
For the Toxicity challenge after Oozma Kappa came in last place, Hardscrabble stated to Mike that only a miracle can save him from expulsion, only for Brock Pearson to announce that Jaws Theta Chi is disqualified for using an illegal protective sting ointment during the Toxicity challenge, which puts Oozma Kappa back into the competition, although she still believes that they will eventually lose, even taunting Sulley over his confidence on Mike's mundane attributes.
However, Mike collaborates with Sulley, generating enough scream energy to brute force the door, and the power surge's chaos terrifies Hardscrabble.
He appears again in the first episode of the series' second season, introducing the Scream Kings and Queens of Monsters University during MU's homecoming football game halftime show.
Among the members of Python Nu Kappa are: Jaws Theta Chi (JΘΧ, suggestive of "jocks") is one of the six fraternities at Monsters University.
In the Scare Games, Jaws Theta Chi was disqualified for using a protective gel that would prevent them from painful swelling upon coming in contact with the "child's toys" (glowing sea urchins) during the "Toxicity Challenge" event.
Archie is the mascot of Fear Tech (a rival school of Monsters University) that Sulley steals, He is an orange scare pig with six legs and goat-like horns on his head.
Besides Frank McCay, among the famous Scarers are: Tylor Tuskmon (voiced by Ben Feldman) is a recent graduate of Monsters University.
Virginia Tuskmon (voiced by Jenifer Lewis) is Tylor's paternal grandmother who lives with him, her son Bernard, and daughter-in-law Millie in season 2.