While carrying on their usual hi-jinks, they inadvertantly stow-away on a spaceship bound for Mars. They meet up with the local Martian residents and cause them to invade the Earth, aided by the "Invincitron", a vacuum-wielding giant robot. Tom, Jerry and their Martian ally, Peep, save the day.
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Jeff Bennett | Dr. Gluckman / Martian Guard #1 / President |
| Corey Burton | Martian Scientist / Court Attendant / Eyes At Gate | |
| Kathryn Fiore | Peep / Press Girl | |
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Brad Garrett | Commander Bristle / Martian Guard #3 |
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Jess Harnell | Major Buzz Blister / Martian General / Worker #3 |
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Tom Kenny | Grob / Gardener #1 / Martian Guard #2 |
| Bill Kopp | Tom / Press Guy #1 | |
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Rob Paulsen | Computer / Worker #1 / Worker #2 |
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Frank Welker | Spike |
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Billy West | Major Biff Buzzard / King Thingg / Gardener #2 |
Directing |
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|---|---|
| Bill Kopp | Director |
Writing |
| Joseph Barbera | Writer |
| William Hanna | Writer |