- Ben Stein - Rosebud
- Ben Stein - Dr. Houston
- Doug TenNapel
Dan Castellaneta hace el papel de Earthworm Jim / Grim Reaper / Turns-His-Eyes-Inside-Out Boy / Evil Jim / Abraham Lincoln / Japius / Stock Broker.
Jeff Bennett interpreta a Peter Puppy / Narrator / Hamsternator / Neighbor / Thug #1 / Billy's Dad / President / Therapist / Great Worm Spirit en la serie.
Jim Cummings interpreta a Psy-Crow / Whooping Cough Boy / Zantor / Bird / Johnny Dactyl / Bob the Killer Goldfish / Number One / Number Two / Sword of Righteousness / Walter / Cuban Band Leader / Santa Claus en la serie.
Kath Soucie interpreta a Princess What's-Her-Name / Cody / Malice The Dog / Billy / Johnny Dactyl's Mom / Little Girl / Perpsichore en la serie.
Charlie Adler interpreta a Professor Monkey-For-A-Head / Rudolph the Red-Nosed Reindeer / Little Boy / Doorman of the Gods / Taxidermist en la serie.
Edward Hibbert interpreta a Evil the Cat en la serie.
Andrea Martin hace el papel de Queen Slug-For-A-Butt / Mrs. Bleverage.
John Kassir interpreta a Snott / Henchrat en la serie.
Capítulo disponible en las siguientes plataformas:
