 Carlos AlazraquiRocko / Spunky / Leon Chameleon / Gordon the Foot / Mitch / Bun Master (voice) | Rocko / Spunky / Leon Chameleon / Gordon the Foot / Mitch / Bun Master (voice) |
 Tom KennyHeffer Wolfe / Chuck Chameleon / Really Really Big Man / Papa Elf / Newscaster / Captain Compost Heap / Salesman / Winds of Change / Tom / Tree (voice) | Heffer Wolfe / Chuck Chameleon / Really Really Big Man / Papa Elf / Newscaster / Captain Compost Heap / Salesman / Winds of Change / Tom / Tree (voice) |
 Charlie AdlerEd Bighead / Bev Bighead / Mr. Dupette / Grandpa Wolfe / Mr. Fathead / Mrs. Fathead / Dead Napoleon (voice) | Ed Bighead / Bev Bighead / Mr. Dupette / Grandpa Wolfe / Mr. Fathead / Mrs. Fathead / Dead Napoleon (voice) |
 Mr. LawrenceFilburt / Maitre D' / Martian 1 / Doug / Hopping Hessian / Doodleberg / Lizard (voice) | Filburt / Maitre D' / Martian 1 / Doug / Hopping Hessian / Doodleberg / Lizard (voice) |
 Jill TalleyNosey / Rabbit Mama / Schlam-O Girl / Teacher / Elephant Lady (voice) | Nosey / Rabbit Mama / Schlam-O Girl / Teacher / Elephant Lady (voice) |
 Linda WallemDr. Hutchinson / Aunt Gretchen / Female Giraffe (voice) | Dr. Hutchinson / Aunt Gretchen / Female Giraffe (voice) |
 Steve LittleNineman / Construction Worker / Cowboy / Ox / Worm B (voice) | Nineman / Construction Worker / Cowboy / Ox / Worm B (voice) |
 Joe MurrayRalph Bighead / Rachel Bighead (voice) | Ralph Bighead / Rachel Bighead (voice) |
| CCosmo SegursonPillow Salesman / Martian 2 / VHS Tape / Inured Worm / TV Announcer 1 / Russian Hockey Player (voice) | Pillow Salesman / Martian 2 / VHS Tape / Inured Worm / TV Announcer 1 / Russian Hockey Player (voice) |
| TTom SmithReally Really Big Man - Movie / VCR (voice) | Really Really Big Man - Movie / VCR (voice) |
| DDan BeckerRabbit Dad (voice) | Rabbit Dad (voice) |
