Joe Alaskey
Duck Dodgers / The Martian Commander (voice)

Bob Bergen
The Eager Young Space Cadet (voice)

Richard McGonagle
Dr. I.Q. Hi (voice)

Tia Carrere
The Martian Queen (voice)

Michael Dorn
Centurion Robot (voice)

Jeff Bennett
Ambassador Porkwellington / Narrator (voice) / Crowd Member (voice) / Goozer (vo...

John DiMaggio
Kilowog (voice) / Long John Silver / The Crusher (voice) / Long John Silver the ...

John O'Hurley
Captain Star Johnson (voice) / Star Johnson (voice)

Mako
Happy Cat (voice) / Happy Cat / Ah-Choo (voice)

Dee Bradley Baker
Attack Droids (voice) / Captain Richards / Giant Space Monkey (voice)

Henry Winkler
Dr. Maniac (voice)

Dave Mustaine
Himself (voice)

Maurice LaMarche
K'chutha Sa'am (voice) / K'chutha Sa'am / Seaman (voice)

Grey DeLisle
Catapoid (voice) / Computer (voice)

Jim Cummings
Tazmanian Devil / Father (voice) / Tasmanian Devil / The Black Eel (voice)

Kevin Michael Richardson
Agent Roboto / Nasty Canasta (voice) / Agent Roboto (voice)

Vanessa Marshall
Waitress / Woman #2 / Woman #3 (voice) / The New Cadet (voice)

Grey Griffin
Massage Girl (voice) (as Grey DeLisle) / Food Synthesizer (voice)

Billy West
The Mother Fudd / Zeke / Martian Commander (voice) / The Fudd (voice)

Tom Kane
The President of Outer Space (voice) / Walter Carbonite / Cooter / Crewmember (v...