Full Cast — Dexter's Laboratory (1996–2003)
Jeff Bennett
Dad (voice)
Kath Soucie
Mom (voice)
Christine Cavanaugh
Dexter (voice)
Kat Cressida
Dee Dee (voice)
Candi Milo
Dexter (voice) / Elsie / Granny / Crow (voice)
Allison Moore
Dee Dee (voice)
Tom Kenny
Principal (voice) / Narrator / Hippie (voice) / Friend #1 / Friend #2 / Friend #4 (voice) / Mordecai / Clerk (voice) / Dumb Kid / Love Kid / Narrator (voice) / Scientist #1 / Alien (voice) / Skinner (voice) / Valhallen (voice) / Demon (voice) / TV Announcer / Judge #2 / Judge #1 (voice) +148 more
Frank Welker
Krunk / Bee (voice) / Monkey / Krunk / Monster (voice) / Dog / Announcer / Vet (voice) / Monkey / Ref / Krunk (voice) / Mr. Luzinsky / Trevor (voice) / Abe Lincoln / Mr. Luzinski (voice) / Krunk (voice) / Squirrel (voice) / Monkey / Captain (voice) / Mr. Luzinsky (voice) / Mr. Lazinsky +76 more
Rob Paulsen
Major Glory / Puppet Pal Clem (voice) / Bully #1 / Bully #3 (voice) / Major Glory / Mom / Puppet Pal Clem (voice) / Major Glory / Comrade Red (voice) / Major Glory / Fat Boy (voice) / Math Teacher / Thug / Game Show Host (voice) / Neighbor #2 / Neighbor #5 (voice) / Gnome +47 more
Eddie Deezen
Mandark / Olga (voice) / Mandark / Momdark (voice) / Mandark (voice) / Mandark / Mandark's Computer (voice)
Kimberly Brooks
Mee Mee (voice) / Gwen (voice) / Girl / Mee Mee (voice) / Mee Mee / Supermodel #2 (voice) / Mee Mee / Grandma (voice) / Mee Mee / Mee Mee's Mom (voice) / Gwen / Bus Driver (voice) / Girl #3 / Morally Righteous Rita Doll / Alarm (voice)
Dee Bradley Baker
Bad Boy #2 / Dog (voice) / Toll Booth Operator #1 / Worm #1 (voice) / Boy #2 (Mikey) / Mikey's Dad / Boy #3 (voice) / Store Owner (voice) / Woodman / Pixie (voice) / Bully #1 / Bully #2 (voice) / Man #2 / Billy (voice) / Guy #1 / Newsman / Dude #2 (voice)
Maurice LaMarche
Dick McMan / Man / Uncle / Alien (voice) / Ratman / Dad (voice) / Washington (voice) / Simion (voice) / Alien #2 (voice)
Daran Norris
Movie Phone Computer / Rumble Computer / Spanish Computer (voice) / Announcer (voice) / T.V. Announcer / S.W.A.T. Leader (voice) / Client / Photographer #1 / Dude #1 (voice) / Man #3 / Boss (voice)
Dom DeLuise
Koosalagoopagoop (voice)
Robert Ridgely
Barbequor / Commander (voice) / Tracker #1 / Space Hick #2 (voice) / Commander (voice)
Earl Boen
Principal / Announcer (voice) / Commander General / Soda Jerk (voice) / Commander Chief / Man #2 (voice) / General (voice)
Kevin Michael Richardson
Big Alien (voice) / Deep Dee Dee (voice) / Action Hank / Cop / Smuggler #3 (voice) / Action Hank / Cop (voice)
Pamela Adlon
Kid / Kid #1 / Lunch Lady (voice) / Brother (voice) / Beau (voice)
Jim Cummings
Red-Eye (voice) / Orgon Grindor (voice)
Michael Pataki
Coach (voice) / Warden (voice)
Jennifer Hale
Girl / Lil Girl #3 (voice) / Miss Pimmerwickle / Record / Southern Bell (voice)
Randy Crenshaw
Right Clerk / Geek Singer (voice) / Barbershop Singer (voice)
Roger Freeland
Barbershop Singer (voice) / Middle Clerk / Geek Singer (voice)
John Garry
Smokem (voice) / Action Hank (voice)
Gary Owens
Blue Falcon (voice) / TV Announcer (voice)
James Hong
RA (voice) / Mr. Chau (voice)
Greg Eagles
Tiki / Robo Shark (voice) / Capital 'G' / Man #1 (voice)
Lauren Tom
Teacher (voice) / Soyen (voice)