Lisa la veterinaria

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)

Michael York

Dr. Lionel Budgie (voice)

Pamela Hayden

Milhouse (voice)