Courtland Mead
Lloyd Nebulon (voice) (39 eps)
Nicolette Little
Francine Nebulon (voice) (39 eps)
April Winchell
Nora Nebulon (voice) (39 eps)
Brian Doyle-Murray
Leo Andromedos (voice) (39 eps)
Brian George
Station (voice) (39 eps)
Justin Shenkarow
Edward "Eddie" Horton (voice) (39 eps)
Pamela Hayden
Douglas McNoggin (voice) (39 eps)
Bill Fagerbakke
Kurt Blobberts (voice) (39 eps)
Diedrich Bader
Boomer (voice) (39 eps)
Tara Strong
Good Cindy (voice) (39 eps)
Mayim Bialik
Bad Cindy (voice) (39 eps)
Anndi McAfee
Brittany Boviak (voice) (39 eps)
Rachel Crane
Megan Uno (voice) (39 eps)
Tress MacNeille
Barbara Bolt (voice) (39 eps)
Dan Castellaneta
Dunkirque (voice) (39 eps)
Eddie Deezen
Larry (voice) (39 eps)
Frank Welker
(voice) (1 eps)
Kevin Michael Richardson
Lord Voon (voice) (1 eps)
Tony Jay
Dr. Werner Von Brain (voice) (1 eps)
Ben Stein
Ranger Wormy (voice) (1 eps)
Josh Peck
Debater 2 (voice) (1 eps)