James Patrick Sullivan, better known as Sulley, is the protagonist of the 2001 Disney•Pixar animated film Monsters, Inc. and the deuteragonist of its 2013 prequel. He was a renowned scarer at Monsters, Inc., where he works alongside his partner and best friend Mike Wazowski. Sulley's world gets turned upside down when he becomes the accidental guardian of a human child (whom he dubs "Boo"). In working to return Boo to the human world, Sulley manages to uncover a company conspiracy while also solving an energy crises that plagued the city of Monstropolis.