Cast and credits of Treehouse of Horror XIX

Dan Castellaneta
Homer Simpson / Grampa Simpson / Krusty the Clown / Groundskeeper Willie / Blue-Haired Lawyer / Snooze / Sex Toy / Sedan Bot / Ad Man 2

Julie Kavner
Marge Simpson (voice) (as Boooooline Kavner)

Nancy Cartwright
Bart Simpson / Nelson Muntz / Ralph Wiggum / Maggie Simpson (voice) (as I Peed My Pants Nance)

Yeardley Smith
Lisa Simpson (voice) (as The Smith to Nowhere)

Hank Azaria
Moe Szyslak / Chief Wiggum / Comic Book Guy / Apu / Old Jewish Man / Voting Machine / Bestimus Muchos / Ad Man 1 / Charlton Heston /

Harry Shearer
Principal Skinner / Melody / Fast-Talking Announcer / Carnage Destructicus (voice)

Marcia Wallace
Edna Krabappel (voice) (as Macabre Marcia Wallace)

Pamela Hayden
Milhouse Van Houten (voice) (as Hellsablazin' Hayden)

Tress MacNeille
Dolph / Boy / Malibu Stacy (voice) (as Tress MacNihil)

Karl Wiedergott
Three-Way / John Wayne (voice) (as 'Hot Tea!')

Larina Jean Adamson