| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Judd Winick | Crew | Creator | Creator | |
Kit Boyce | Crew | Art | Background Designer | 14 |
 Maxwell Atoms | Crew | Production | Producer | 40 |
 Adam Wylie | Cast | Actor | Deputy Minion / Zombie #1 (voice) | 1 |
 Alexander Polinsky | Cast | Actor | Dennis Lee (voice) | 14 |
 Amy Hill | Cast | Actress | Jasmine Lee (voice) | 1 |
 Billy West | Cast | Actor | Terry / Pilot #2 (voice) | 2 |
 Candi Milo | Cast | Actress | Ophelia Ramírez (voice) | 40 |
 Carlos Alazraqui | Cast | Actor | Monroe (voice) | 40 |
 Clancy Brown | Cast | Actor | Nester (voice) | 1 |
 Colleen O'Shaughnessey | Cast | Actress | Margie (voice) | 1 |
 Cynthia Songé | Cast | Guy / Monster Human Child #2 (voice) | 1 | |
 Dan Finnerty | Cast | Actor | Singer (voice) | 1 |
 Daran Norris | Cast | Actor | Jean Claude (voice) | 1 |
 Debi Derryberry | Cast | Actress | Chorus (voice) | 1 |
 Dee Bradley Baker | Cast | Actor | Taylor (voice) | 1 |
 James Hong | Cast | Actor | Uncle Eddie (voice) | 1 |
 James Sie | Cast | Actor | Kellington / Kai Yee (voice) | 1 |
 Jane Lynch | Cast | Actress | Madame Rothchild (voice) | 1 |
 Jeff Bennett | Cast | Actor | Skeeter Khomen-Getit (voice) | 1 |
 Jess Harnell | Cast | Actor | Chorus (voice) | 1 |
 Jessica Walter | Cast | Actress | Demoness / Cordoth's Daughter (voice) | 2 |
 Kath Soucie | Cast | Actress | Henchman #2 (voice) | 1 |
 Lara Jill Miller | Cast | Actress | Henchman #3 (voice) | 1 |
 Martin Jarvis | Cast | Actor | William / King Teddy (voice) | 1 |
 Maurice LaMarche | Cast | Actor | Dimitri the Terrible / Scotty (voice) | 1 |
 Pat Musick | Cast | Actress | Eloise (voice) | 1 |
 Pete Sepenuk | Cast | Actor | Sleazy Demon / Critic #1 / Critic #2 (voice) | 1 |
 Phil LaMarr | Cast | Actor | Freddy (voice) | 1 |
 Rip Taylor | Cast | Actor | Horrifying Monster (voice) | 2 |
 Rob Paulsen | Cast | Actor | 10th Level Warlock (voice) | 1 |
S. Scott Bullock | Cast | Actor | Employee / Gorp / Guard (voice) | 1 |
 Susan Silo | Cast | Actress | Auntie Roon (voice) | 2 |
 Tara Strong | Cast | Actress | Lila (voice) | 1 |
 Gwendoline Yeo | Cast | Actress | Cousin Lisa / Aunt Lily (voice) | 1 |
| Person | Type | Job | Role(s) | Episodes |
