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Rob Paulsen as Gramps / Pilot / Mule (voice) |
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Kath Soucie as Girl / Alien Kid 1 (voice) |
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Christine Cavanaugh as Boy / Alien Kid 2 (voice) |
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Charlie Adler as Wimpy Alien / Alien Dad / Terrified Man / Alien Grandpa (voice) |
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Julianne Elizabeth Davis as President (voice) |
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Neil Dickson as Alien Leader / Sphinx (voice) |
| Writing | Butch Hartman | Writer |
| Directing | Butch Hartman | Director |
| Writing | Michael Ryan | Writer |
| Production | Davis Doi | Supervising Producer |
| Production | Victoria McCollum | Production Supervisor |
| Visual Effects | Robert Alvarez | Animation Director |
| Production | Kris Zimmerman | Casting Director |
| Sound | Bodie Chandler | Music Director |
| Camera | James Keefer | Camera Operator |
| Camera | Dan Larsen | Camera Operator |
| Editing | Paul Douglas | Supervising Film Editor |
| Crew | Gayle Mnookin | Post Production Supervisor |
| Production | Gina Lamar | Post Production Coordinator |
