El cerebro de Bart

Dan Castellaneta

Homer Simpson / Abe Simpson / Barney Gumble / Krusty the Clown / Groundskeeper Willie / Mayor Quimby (voice)

Julie Kavner

Marge Simpson / Patty Bouvier / Selma Bouvier / Jacqueline Bouvier (voice)

Nancy Cartwright

Bart Simpson / Maggie Simpson / Nelson Muntz / Ralph Wiggum (voice)

Yeardley Smith

Lisa Simpson / Maggie Simpson (voice)

Hank Azaria

Moe Szyslak / Chief Wiggum / Apu / Comic Book Guy / Carl Carlson / Superintendent Chalmers (voice)

Harry Shearer

Ned Flanders / Mr. Burns / Smithers / Principal Skinner / Lenny Leonard (voice)

Maggie Roswell

Elizabeth Hoover / Luann Van Houten (voice)

Grey DeLisle

Sherri / Terri (voice)

Kerry Washington

Rayshelle Peyton (voice)

Megan Mullally

Sarah Wiggum (voice)

Alex Désert

Carl Carlson (voice)

Dawnn Lewis

Bernice Hibbert (voice)

Tress MacNeille

Agnes Skinner (voice)

Pamela Hayden

Milhouse Van Houten (voice)

Chris Edgerly

(voice)