Johnny "The Jaw" Worthington III is the main antagonist of Monsters University. He is a dark purple monster with sharp teeth and two demon-like horns. He is Mike's rival, and the confident president of Roar Omega Roar (RΩR), a Monsters University fraternity that prides itself on its notable Scarers. His antagonistic role in the film comes from him frequently belittling the Oozma Kappa fraternity.