Dad / Announcer / Main Title Narrator / Man / Man #1 / Robot / Dog / Kid #1 / Mailman / Boy / Cop / Guy #2 / Ice Cream Man / Jeff / Jock / Kid / Monster / Old Man / TV Announcer / Wind Bear / 'A Boy and His Bug' Narrator / 'The Justice Friends' Main Title Narrator / Actor / Alien #1 / Amoebae #2 / Amoebae #3 / Anchor Man / Army Soldier / Arnie / Barney / Biker #2 / Boy #1 / Boy #4 / Boy Band Germ #1 / Boy Band Germ #3 / Boy Student / Boy on Left / Captain / Carrot Guy / Cassius / Chief / Computer / Computer #2 / Cool Guy / Cop 2 / Creature / Delivery Man / Dexter' / Dexter's Dad / Dog #1 / Dog #2 / Dog's Owner / Doorman / Dude / Dude #3 / Fat Kid / Fish / Fisherman / Fois Gras / French Guy / French Teacher / Gentleman / Goalie / Grandpa / Grape Ape / Grappulator / Guy / Guy #1 / Guy in Audience / Italian Man / Jelly Jerry / Jocko / John Pierre / Kid #2 / Kid Shopper / Knight / Kurt / Man #2 / Milk Man / Nasa / Neighbor #1 / Neighbor #4 / Nerd #2 / Newman / Old Man Dexter / Pilot / Professor / Rabbit / Reporter / Rich Man / Ricola Man / Robber / Robot #1 / Robot #2 / Santa Claws / Scientist Dad / Sergeant / Singer / Smith / Smuggler #2 / Soldier #2 / Student #2 / Super Head Dexter / Talking Dog / Thug / Tiger / Timmy / Trollbetoot 1 / Trucker 2 / Virus / Whale Chorus / William / Windbear / Windbear - Mandark's Dad / Zoo Keeper / Zpatch
Major Glory / Puppet Pal Clem / Bully #3 / Puppet Pal Mitch / Tiki Torch / Announcer / Announcer #1 / Beau's Dad / Bicentennial Kristal Reseller / Billy the Monster / Bully #1 / Buzzard / Charlie / Chris / Chubby / Comrade Red / Dog / Einstein / Fat Boy / Game Show Host / Gnome / Goat / Gold Fish / Guy / Guy #1 / Hunter / Joe / Kid #1 / Little Trollbetoot / Math Teacher / Mice / Mom / Moose / Neighbor #2 / Neighbor #5 / Old Man McCowsky / Otto / Pedro / Pierre / Promoter / Sam-R-I / Sam-R-i / Shakespeare Kid / Silver Spooner / Soldier / Spork / Taxi Guy / Thug / Tour Guide / Trevor / Trollbetoot 3 / Wet Willie / Whale Chorus / Wolf
storyboard artist / model designer / additional model designer / models / additional storyboard artist / background design / model design / storyboard / storyboard by
composer: main/end title theme / composer: theme music / composer: "Dexter's Laboratory" main/end title theme / composer: main title theme / musical director / title music
composer: main/end title theme / composer: theme music / composer: title theme / composer: "Dexter's Laboratory" main/end title theme / composer: main title theme / title music