 | Jeff Bennett als Dr. Gluckman / Martian Guard #1 / President (voice) |
 | Corey Burton als Martian Scientist / Court Attendant / Eyes At Gate (voice) |
 | Kathryn Fiore als Peep / Press Girl (voice) |
 | Brad Garrett als Commander Bristle / Martian Guard #3 (voice) |
 | Jess Harnell als Major Buzz Blister / Martian General / Worker #3 (voice) |
 | Tom Kenny als Grob / Gardener #1 / Martian Guard #2 (voice) |
 | Bill Kopp als Tom / Press Guy #1 (voice) |
 | Rob Paulsen als Computer / Worker #1 / Worker #2 (voice) |
 | Frank Welker als Spike (voice) |
 | Billy West als Major Biff Buzzard / King Thingg / Gardener #2 (voice) |
| Bill Kopp | Director |
| William Hanna | Characters |
| Joseph Barbera | Characters |
| Bill Kopp | Writer |
| Julie Bernstein | Original Music Composer |
| Steven Bernstein | Original Music Composer |
| Ken Solomon | Editor |
| Tom Minton | Producer |
| Diane A. Crea | Associate Producer |
| Joseph Barbera | Executive Producer |
