Jeff Bennett
Dr. Gluckman / Martian Guard #1 / President (voice)
Acting
Corey Burton
Martian Scientist / Court Attendant / Eyes At Gate (voice)
Acting
Kathryn Fiore
Peep / Press Girl (voice)
Acting
Brad Garrett
Commander Bristle / Martian Guard #3 (voice)
Acting
Jess Harnell
Major Buzz Blister / Martian General / Worker #3 (voice)
Acting
Tom Kenny
Grob / Gardener #1 / Martian Guard #2 (voice)
Acting
Bill Kopp
Tom / Press Guy #1 (voice)
Directing
Rob Paulsen
Computer / Worker #1 / Worker #2 (voice)
Acting
Frank Welker
Spike (voice)
Acting
Billy West
Major Biff Buzzard / King Thingg / Gardener #2 (voice)
Acting