 | Carlos Alazraqui als Rocko / Spunky / Leon Chameleon / Gordon the Foot / Mitch / Bun Master (voice) |
 | Tom Kenny als Heffer Wolfe / Chuck Chameleon / Really Really Big Man / Papa Elf / Newscaster / Captain Compost Heap / Salesman / Winds of Change / Tom / Tree (voice) |
 | Charlie Adler als Ed Bighead / Bev Bighead / Mr. Dupette / Grandpa Wolfe / Mr. Fathead / Mrs. Fathead / Dead Napoleon (voice) |
 | Mr. Lawrence als Filburt / Maitre D' / Martian 1 / Doug / Hopping Hessian / Doodleberg / Lizard (voice) |
 | Jill Talley als Nosey / Rabbit Mama / Schlam-O Girl / Teacher / Elephant Lady (voice) |
 | Linda Wallem als Dr. Hutchinson / Aunt Gretchen / Female Giraffe (voice) |
 | Steve Little als Nineman / Construction Worker / Cowboy / Ox / Worm B (voice) |
 | Joe Murray als Ralph Bighead / Rachel Bighead (voice) |
 | Cosmo Segurson als Pillow Salesman / Martian 2 / VHS Tape / Inured Worm / TV Announcer 1 / Russian Hockey Player (voice) |
| Tom Smith als Really Really Big Man - Movie / VCR (voice) |
| Dan Becker als Rabbit Dad (voice) |
| Tom Smith | Storyboard Artist |
| Dan Becker | Storyboard Artist |
| Tom Smith | Screenplay |
| Dan Becker | Screenplay |
| Joe Murray | Director |
| Cosmo Segurson | Director |
| Cosmo Segurson | Screenplay |
| Joe Murray | Screenplay |
