|“||"Anything you need, you just give a big holler-ooney!"||„|
|~ Don Carlton|
Donald "Don" Carlton is another friend of Mike and Sulley and one of the tritagonists in Monsters University. He is a middle-aged, pudgy and balding cross between a bat, an octopus, and a hippopotamus and the leader of the Oozma Kappa fraternity.
He is voiced by Joel Murray.
Like all OKs, Don was kicked out of the School of Scaring; he then changed to be a Computer Science major. He has problems with his tentacles, whose suckers tend to stick everywhere, interfering with his movements and making unwanted noise. However, through the course of the film he learns to use them to his advantage, using them to climb on walls. This comes very in handy during the fourth event of the Scare Games, "Hide and Sneak", where Don's ability to cling onto the ceiling with his tentacles allowed him to avoid being caught by the referee, which would result in the team being eliminated. He has romantic feelings for Sheri Squibbles and eventually gets engaged to her. At the end of the film, Don becomes a Scarer at Monsters, Inc., along with his Oozma Kappa brothers.
Don reappeared in the short with the other Oozma mates.