| Corey Burton | ... | Gruffi Gummi (voice) | |
| Brian Cummings | ... | Sir Tuxford (voice) | |
| Jim Cummings | ... | Zummi Gummi / Carpy (voice) | |
| June Foray | ... | Grammi Gummi / Martha / Carpy (voice) | |
| Katie Leigh | ... | Sunni Gummi (voice) | |
| Lorenzo Music | ... | Tummi Gummi (voice) | |
| Noelle North | ... | Cubbi Gummi / Princess Calla (voice) | |
| Will Ryan | ... | King Carpy (voice) | |
| Frank Welker | ... | Bobo (voice) |
| Episode Crew |
Directed by | |||
| David Block | |||
Writing credits(in alphabetical order) | ||
| Duane Capizzi | writer | |
Produced by | |||
| David Block | .... | producer | |
| Barbra J. Ebel | .... | assistant producer (as Barbra Ebel) | |
| Rich Fogel | .... | producer | |
| Mark Seidenberg | .... | producer | |
Original Music by | |||
| Thomas Chase | |||
| Steve Rucker | |||
Production Management | |||
| Sara Duran | .... | post-production manager | |
| Dan Forster | .... | production manager: Australia | |
Art Department | |||
| Yi-Chih Chen | .... | storyboard artist | |
| Steven E. Gordon | .... | storyboard artist (as Steve Gordon) | |
| David Prince | .... | storyboard artist (as Dave Prince) | |
Sound Department | |||
| James L. Aicholtz | .... | dialogue mixer | |
| Skip Craig | .... | track reader | |
| Robert L. Harman | .... | sound mixer | |
| Allen L. Stone | .... | sound re-recording mixer | |
Editorial Department | |||
| Jeffrey Arthur | .... | post-production coordinator | |
| Robert S. Birchard | .... | supervising editor | |
| Rich Harrison | .... | managing editor | |
| David Lynch | .... | assistant editor | |
| Craig Paulsen | .... | assistant editor | |
Music Department | |||
| Thomas Chase | .... | conductor | |
| Steve Rucker | .... | conductor | |
| Michael Silversher | .... | composer: theme song (as Silversher and Silversher) | |
| Patty Silversher | .... | composer: theme song (as Silversher and Silversher) | |
Other crew | |||
| Nanci Battelle | .... | production assistant | |
| Rich Fogel | .... | story editor | |
| Olivia Miner | .... | talent coordinator | |
| Wade Zia Nassir | .... | production assistant | |
| John Royer | .... | production assistant | |
| Mark Seidenberg | .... | story editor | |
| Jacaleen Veber | .... | production assistant (as Jacaleen Cotter) | |
| Series Crew These people are regular crew members. Were they in this episode? |
Sound Department | |||
| Willy Allen | .... | sound supervisor | |
| Rick Hinson | .... | sound effects editor | |
| Main series | Episode guide | Full cast and crew |
| Company credits | IMDb TV section | IMDb Fantasy section |