On screen
Cast
60 credited performers
Jeff Bennett
Dad (voice)
Kath Soucie
Mom (voice)
Christine Cavanaugh
Dexter (voice)
Kat Cressida
Dee Dee (voice)
Candi Milo
Dexter (voice)
Allison Moore
Dee Dee (voice)
Tom Kenny
Narrator / Fish (voice)
Frank Welker
Monkey / Snorkdro (voice)
Rob Paulsen
Major Glory / Moose (voice)
Eddie Deezen
Mandark / Olga (voice)
Kimberly Brooks
Mee Mee / Mee Mee's Mom (voice)
Dee Bradley Baker
Store Owner (voice)
Maurice LaMarche
Dick McMan / Man / Uncle / Alien (voice)
Daran Norris
T.V. Announcer / S.W.A.T. Leader (voice)
Dom DeLuise
Koosalagoopagoop (voice)
Robert Ridgely
Tracker #1 / Space Hick #2 (voice)
Earl Boen
General (voice)
Kevin Michael Richardson
Action Hank / Cop / Smuggler #3 (voice)
Pamela Adlon
Kid / Kid #1 / Lunch Lady (voice)
Jim Cummings
Orgon Grindor (voice)
Michael Pataki
Warden (voice)
Jennifer Hale
Miss Pimmerwickle / Record / Southern Bell (voice)
Randy Crenshaw
Barbershop Singer (voice)
Roger Freeland
Middle Clerk / Geek Singer (voice)
John Garry
Smokem (voice)
Gary Owens
TV Announcer (voice)
James Hong
RA (voice)
Greg Eagles
Capital 'G' / Man #1 (voice)
Lauren Tom
Teacher (voice)
Randy Poffo
Rasslor (voice)
Paul Williams
Professor Williams (voice)
Agostino Castagnola
Doctor / Narrator (voice)
Martin Mull
M.A.R. 10 (voice)
Fred Willard
F.R.E.D. (voice)
Mark Hamill
Magic Uncle Fergel O'Reilly (voice)
Michael Dorn
Robo Dexo 3000 (voice)
Andy Suriano
Andy Suriano (voice)
Brad Garrett
Magmanamus / Man #1 / Driver (voice)
Paula Tiso
Honeydrew (voice)
John Kassir
Guy #2 / Guy #3 / Kid #2 (voice)
Ed Gilbert
Huntor / Space Hick #2 (voice)
Jorge Galvan
Doctor Diablos (voice)
Michael Conner
Magician (voice)
Jeff Coopwood
Announcer / Man #1 / Big Daddy (voice)
Don Shelton
Left Clerk / Geek Singer (voice)
Steve Lively
Barbershop Singer (voice)
DeeDee Rescher
Peltra (voice)
Tyler Samuel Lee
Narrator / Dexter / Mandark (voice)
Gail G. Hiller Lee
Narrator's Mom (voice)
Brian Tochi
Toshi / Japanese Dad / Japanese Boy #1 / Japanese Boy #2 (voice)
Grey DeLisle
Waitress #1 / Waitress #2 (voice)
Melissa Disney
Cheerleader / Girl #2 / Girl #5 (voice)
Dave Coulier
Coach (voice)
Hamilton Camp
Principal (voice)
Rachael MacFarlane
Miss Salinger / Cheerleader / Girl (voice)
Jess Harnell
Boy Band Germ #2 / Boy Band Germ #4 / Boy Band Germ #5 (voice)
Jay Huguley
Hokochoo (voice)
Jennifer Martin
Sexy Computer (voice)
Mindy Cohn
Librarian (voice)
Corey Burton
Narrator / Martian / Super-Monkey (voice)