Which actor voices Johnny J. Worthington III in Monsters University?
Answer
Nathan Fillion
Answer
Nathan Fillion
Which actor voices Johnny J. Worthington III in Monsters University? Nathan Fillion voices him.
Johnny J. Worthington III, nicknamed “The Jaw,” is the confident president of Roar Omega Roar, the elite fraternity at Monsters University. He represents the polished, competitive side of campus life and serves as a major rival to Mike Wazowski and the less prestigious Oozma Kappa fraternity during the Scare Games.
Nathan Fillion is a Canadian actor known for both live-action and voice performances. His delivery gives Johnny an assured, swaggering personality that contrasts with Mike’s determination and Sulley’s physical confidence. The character is not the same as Johnny’s fellow Roar Omega Roar member Chet Alexander, who is voiced by Bobby Moynihan; that distinction is an easy source of confusion because both characters appear together throughout the competition.
Johnny’s story continues beyond the university setting. During the film’s closing credits, he is shown working as a scarer for Fear Co. In the later series Monsters at Work, he is depicted as the company’s chief executive officer, expanding the character’s role beyond his student-era rivalry with Mike and Sulley.
Source: Wikipedia · fact-checked Aug. 2026