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 23rd (voice) / Long John Silver / The Cru...

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
Tasmanian Devil / The Black Eel (voice) / Tazmanian Devil / Father (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
Food Synthesizer (voice) / Massage Girl (voice) (as Grey DeLisle)

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

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