Full list of reoccuring characters played by Dan Castellaneta on The Simpsons
- Homer J. Simpson, the patriarch of the Simpsons family.
- Abraham J. "Grampa" Simpson, Homer's father.
- Groundskeeper Willy, keeper of the school's award-winning play field.
- Barney Gumble, bachelor slob. Frequents Moe's Tavern.
- Krusty the Clown, a.k.a. Herschel Krustofsky Host of the very commercial `Krusty the Clown Show'. Promotes pork products.
- Sideshow Mel, a.k.a. Melvin Van Horne. Krusty the Clown's new sidekick.
- Mr. Teeny, Krusty's cigar-smoking chimp.
- Hans Moleman, hapless driver with walking cane and eyeglasses. Has a tendency to die quite frequently. Hosts the 'Moleman in the Morning' radio show.
- Crazy old man, fellow inmate at the Retirement Castle.
- Disco Stu, doesn't advertise.
- Diamond Joe Quimby, Town Mayor.
- Kodos, frequent alien visitor, sister of Kang, has a slight salivation problem.
- Aristotle Amandopolis, owner of the Shelbyville NPP.
- Krusty Burglar, midget from Estonia.
- Poochie, "short-lived" character on Itchy & Scratchy. Voiced by Homer.
- Arnie Pie "In the Sky", KBBL traffic reporter
- Fernando Vidal, the world's most devious assassin.
- Postmaster Bill, postmaster at the Springfield Post Office
- The Human Fly, media seeker.
- Freddy Quimby, Mayor Quimby's spoiled nephew.
- Fidel Castro, president of Cuba.
- Gerald Ford, former US President, likes nachos.
- Jim Belushi, appears in the film being filmed in the airplane.
- C3P0, from "Star Wars"
See also: Hank Azaria
, Harry Shearer
, Nancy Cartwright