James P. Sullivan

James "Jimmy" P. "Sulley" Sullivan is the protagonist in Monsters, Inc. and the deuteragonist in Monsters University. He is a huge monster with shaggy blue fur with purple spots, two small horns on his head, and a long tail.

Monsters, Inc.
In the first film, Sulley was top scarer of Monsters, Inc., and was naturally afraid of humans, due to their rumored "toxic touch" that could kill the biggest monsters in an instant... until he met Boo, a human girl who found her way into the monster world and into the factory. Sulley, who was initially hesitant, became Boo's protector and obtained a fatherly role to the human. Constantly worrying about her and protecting her from harm while at the same time unlocking the secrets that humans were not as deadly as rumored. Starting by treating Boo like a pet, he eventually grew to care for her, the attention drawing away from a jealous Mike. Randall Boggs, Sulley's rival who also wants to be top scarer, tries to use Boo in an experiment to forcibly extract screams for the growing energy crisis that relies on their cries to provide, and risking his friendship with Mike, Sulley comes to her rescue and in the process discovers that a child's laughter is 10 times more powerful than scream. Sometime after Mr. Waternoose, the CEO of Monsters, Inc., is arrested by the CDA, Sulley becomes the new CEO and changes the policy to obtain children's laughter instead, apparently turning the energy crisis around.

Sometime after the events of the film, Sulley announces Put That Thing Back Where It Came From Or So Help Me, a company play that stars Mike, who has also directed, written, and produced the play, in front of the audience, and he appears in the play as a co-star.

Mike's New Car
In the short, Sulley is featured as the secondary protagonist. When he sees Mike's new car, he asks Mike what was wrong with the old car, to which Mike replied, "That's three little words, Sulley: Six-wheel drive!", then they both got in. Unfortunately for Mike, Sulley accidentally ruins the car by doing various different things, and Mike eventually told Sulley to get out, but ruined the car himself when he sped off.

Monsters University
Sulley is set to reappear in the prequel. He will look shorter, skinnier and shaggier.

"When it comes to Scaring, Sulley’s a natural—his abundant size, fierce roar and family legacy of a long line of high-achieving Scarers make him a shoo-in for the esteemed Scare Program at Monsters University. But from the moment the overly confident monster steps his big furry feet on campus, it’s clear he’d rather crack jokes than books—and he learns the hard way that his unfettered talent and family ties can only get him so far. With his ego bruised and future in jeopardy, a stubborn Sulley must put his pride aside, team up with an odd bunch of misfit monsters and actually work if he wants to live up to his true Scaring potential."

An 18-year-old Sulley appears in Monsters University as an arrogant yet friendly monster who thinks that his family name is enough to get him into the scaring buisness. He is quick to clash with Mike, who he considers to have lower chances of becoming a scarer than himself. He joins the fraternity Roar Omega Roar, only to be kicked out after his and Mike's rivalry causes them to be booted from the scaring program. He decides to join Oozma Kappa in order to get back into the scaring program, but he fears that Oozma Kappa will lose the Scare Games because they aren't significantly scary. He eventually develops from Mike's rival to his friend, although he doesn't find Mike scary enough to win and tampers with the equipment so that Mike will register a good score. As a result, Oozma Kappa wins, but Mike finds out that Sulley cheated and enters the human world to prove himself a good scarer. Feeling guilty, Sulley confesses his cheating to Dean Hardscrabble, and then risks his life to get Mike back from the human world; however, the door is deactivated, stranding the duo. Mike convinces Sulley to help him generate enough energy from their side to power the door, and scare the newly-arrived human police. They return to the monster world, but are expelled from Monsters University. Despite this, they get to work at Monsters, Inc. in the mailroom, and work their way up until Sulley becomes a scarer, and Mike his assistant.

Characteristics
In the first film, although his job is to scare children, Sulley makes efforts to befriend Boo, and then goes to extreme measures to protect her from Randall. It is Sulley who realizes that making children laugh is a far better way to produce energy than making them scream, thus solving Monstropolis' energy crisis.

Sulley is also very loyal to Mike, going so far as to lend him "odorant" and making reservations for him at an exclusive restaurant on Mike's girlfriend's, Celia Mae, birthday. Sulley also attempts to cover for Mike when Mike realizes that he has forgotten to turn in his paperwork. In return, he relies on Mike to help him in his madcap efforts to keep Boo safe from Randall. When Mike protests, Sulley chooses to help Boo over appeasing Mike's pride; his choice is justified when Mike later changes his mind and comes to help him and Boo.

Trivia

 * Sulley appears in the end credits of Cars as a giant monster truck. He is also seen in Tokyo Mater with a car version of Mike.
 * Sulley was originally going to be a janitor and not a scarer in one early version. This is referenced in Monsters University in a montage of Mike and Sulley's jobs climbing the ranks to become scarers, one of the jobs being a janitor.
 * According to the original treatment from the DVD, Sulley's working name was Johnson and instead of being the best scarer as seen in the movie, he was a clumsy monster who was very bad at his job.
 * In another early draft, one of his original names was Hob, and instead of working as a Scarer, he actually worked for a TV show.
 * One prototype drawing of Sulley showed him with brown fur, while another showed him wearing glasses, and a third showed him with tentacles. The reason for Sulley to be drawn with legs for his final design is due to the fact that the animators were afraid that the viewers would focus too much on the tentacles instead of his face had he be drawn with such.
 * A drawing of Sulley appears on a wood carving in Brave.
 * Sulley is the first main protagonist who doesn't have a love interest, followed by Remy and Merida.
 * In the prequel Monsters University, it is said that he is 18, so in the first movie he is probably 28.
 * John Goodman, Sulley's voice actor, also voiced Pacha from The Emperor's New Groove, Baloo from The Jungle Book 2, and Eli "Big Daddy" LaBouff from The Princess and the Frog.
 * Sulley's design was said to be based on that of a prehistoric giant ground sloth.
 * Sulley has 5.5 million rendered hairs in Monsters University, 5 times as many as in Monsters, Inc.
 * It's revealed in Monsters University  that Sulley's father is actually named Bill Sullivan.
 * At one point, they made Sulley wear glasses, which was a bad idea because it was hard to see the eye expressions of the character.
 * In France, Sulley's name is spelt Sulli.