| Person | Type | Job | Role(s) |
|---|---|---|---|
 Berkeley Breathed | Crew | Writing | Book |
 Garrett Warren | Crew | Crew | Stunt Coordinator |
 Jason Corgan Brown | Crew | Art | Art Department Manager |
 John Powell | Crew | Sound | Original Music Composer |
Michael Leung | Crew | Lighting | Lighting Artist |
Michael Parks | Crew | Visual Effects | Animation |
 Randy Thom | Crew | Sound | Sound Designer |
 Robert Zemeckis | Crew | Production | Producer |
 Simon Wells | Crew | Directing | Director, Screenplay |
Jimmy Almeida | Crew | Visual Effects | Animation |
Yuhon Ng | Crew | Visual Effects | Animation |
James Sathre | Crew | Lighting | Lighting Technician |
Wendy Wells | Crew | Writing | Writer |
 Breckin Meyer | Cast | Actor | Alien (voice) |
 Dan Fogler | Cast | Actor | Gribble (voice) |
 Dee Bradley Baker | Cast | Actor | Two Cats (uncredited) |
 Elisabeth Harnois | Cast | Actress | Ki (voice) |
 Jacquie Barnbrook | Cast | Actress | Martian |
 Joan Cusack | Cast | Actress | Mom (voice) |
 Julene Renee | Cast | Actress | Martian (voice) |
 Kevin Cahoon | Cast | Actor | Wingnut |
Kirsten Severson | Cast | Martian | |
 Matthew Henerson | Cast | Actor | Martian |
 Mindy Sterling | Cast | Actress | Supervisor (voice) |
 Seth Green | Cast | Actor | Milo (voice) |
 Stephen Kearin | Cast | Actor | Martian |
 Tom Everett Scott | Cast | Actor | Milo's Dad (voice) |
 Amber Gainey Meade | Cast | Actress | Martian |
 Raymond Ochoa | Cast | Actor | Martian Hatchling (voice) |
 Robert Ochoa | Cast | Actor | Martian Hatchling (voice) |
 Ryan Ochoa | Cast | Actor | Martian Hatchling (voice) |
Seth Robert Dusky | Cast | Milo (voice) (as Seth Dusky) | |
Aaron Rapke | Cast | Martian | |
Adam Jennings | Cast | Martian | |
| Person | Type | Job | Role(s) |
