Dr. Julius Michael Hibbert, M.D. is a character on the television animated sitcom The Simpsons. He is Springfield's most prominent medical professional, though he is often characterized as greedy and lacking in empathy. His signature character trait is his often-inappropriate chuckling, which is generally cued by misfortune rather than something genuinely amusing. The character was voiced from his 1990 debut by Simpsons regular Harry Shearer, and since a recasting of all of the show's non-white characters, by Kevin Michael Richardson from 2021.