| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Doug Langdale | Crew | Writing | Writer | 16 |
 Doug TenNapel | Crew | Production | Producer, Creator | 23 |
 Henry Gilroy | Crew | Writing | Writer | 1 |
Jim Peterson | Crew | Writing | Writer | 1 |
John Loy | Crew | Writing | Writer | 2 |
Steve Roberts | Crew | Writing | Writer | 1 |
Thomas Hart | Crew | Writing | Writer | 2 |
John Behnke | Crew | Writing | Writer | 1 |
Rob Humphrey | Crew | Writing | Writer | 1 |
 Andrea Martin | Cast | Actress | Queen Slug-For-A-Butt / Mrs. Bleverage | 23 |
 Ben Stein | Cast | Actor | 1 | |
 Charlie Adler | Cast | Actor | Professor Monkey-For-A-Head / Rudolph the Red-Nosed Reindeer / Little Boy / Doorman of the Gods / Taxidermist | 23 |
 Dan Castellaneta | Cast | Actor | Earthworm Jim / Grim Reaper / Turns-His-Eyes-Inside-Out Boy / Evil Jim / Abraham Lincoln / Japius / Stock Broker | 23 |
 Edward Hibbert | Cast | Actor | Evil the Cat | 23 |
 Jeff Bennett | Cast | Actor | Peter Puppy / Narrator / Hamsternator / Neighbor / Thug #1 / Billy's Dad / President / Therapist / Great Worm Spirit | 23 |
 Jim Cummings | Cast | Actor | 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 | 23 |
 John Kassir | Cast | Actor | Snott / Henchrat | 23 |
 Kath Soucie | Cast | Actress | Princess What's-Her-Name / Cody / Malice The Dog / Billy / Johnny Dactyl's Mom / Little Girl / Perpsichore | 23 |
| Person | Type | Job | Role(s) | Episodes |
