Pat Fraley

Mayor Blank (voice) / Bud Frontier / Carpeted Man (voice) / Eastern Bloc Robot Cowboy (voice) / Mitch (voice) / Australopithecine (voice) / Carpeted Man (voice) / Visual Eye (voice) / Zipperneck (voice) / Mayor Blank / Sgt. Doodlehead / Captain Sanity (voice) / Dog Sidekick / Orangutan Sidekick (voice) / The Carpeted Man (voice) / Thrakkorzog's Tongue (voice) / Narrator (voice)

16 eps

Micky Dolenz

Arthur (voice)

13 eps

Kevin Schon

Big Shot (voice) / Feral Boy (voice) / Bigshot (voice) / Proto Clown / Feral Boy (voice) / Babyboomerangutan (voice) / Living Doll (voice) / Jack Tuber (voice) / Watt (voice)

10 eps

Roger Rose

Four-Legged Man (voice) / Brian Pinhead (voice) / Skippy (voice)

10 eps

Jim Cummings

Mr. Mental (voice) / Thrakkorzog (voice) / Barry the Tick (voice) / Multiple Santa (voice) / Joseph Stalin / Captain Decency (voice) / Leonardo da Vinci / Mongol (voice) / Stalingrad (voice) / Eyebrows Mulligan (voice) / Owner (voice)

10 eps

Pat Musick

Sally Vacuum (voice) / The Bee Twins / Sally Vacuum (voice) / Mad Nanny (voice) / Fred (voice) / The Bee Twins (voice) / Tuun-La Not Of This Earth (voice)

8 eps

Maurice LaMarche

Human Ton / Handy (voice) / Doorman / Evil Midnight Bomber (voice) / Hotel Manager (voice) / Mr. Smarty Pants / Soren (voice) / The Deadly Bulb (voice) / Thrakkorzog's Roommate (voice)

7 eps

Dorian Harewood

Taft (voice) / Pineapple Pokopo (voice) / George Washington Carver (voice) / Golfer (voice)

6 eps

Ed Gilbert

El Seed (voice) / El Seed / Indigestible Man (voice) / Idea Man (voice) / Johannes Gutenberg (voice)

5 eps

Danny Mann

Dinosaur Neil (voice) / Dr. Mung Mung / Tongue Tongue (voice) / Mr. Exciting (voice) / Bellbot (voice)

5 eps