The Electric Company
Morgan FreemanMark /Easy Reader /Mel Mounds /Count Dracula /Mad Scientist /The Cop /Marcello
Rita MorenoCarmela
Mel BrooksBlond-Haired Cartoon Man (voice)
Gene WilderLetterman (voice)
Joan RiversLetterman Narrator (voice)- JJune AngelaJulie - Member of the Short Circus
- JJudy GraubartWinnie /Jennifer of the Jungle /Julia Grown-Up /The Witch
- JJim BoydAndy /J. Arthur Crank /Paul the Gorilla /The Blue Beetle /The Wolfman /Loreli Loverly /Max /Steve Awesome the $6.39 Man
Zero MostelSpell Binder (voice)
Luis ÁvalosRoberto / Dr. Doolats / Igor / Pedro
Hattie WinstonSylvia / Valerie the Librarian
Bill CosbyThe Milk Man- SSkip HinnantBoy (Love of Chair)
Lee ChamberlinBrenda /Vi /Madame Rosalie /Gladys the Glow-Worm
Todd GraffJesse - Member of the Short Circus- BBayn JohnsonKelly - Member of the Short Circus
- RRéjane MagloireSamantha - Member of the Short Circus
- KKen RobertsThe Last Word (voice), Announcer (Love of Chair)
Denise NickersonAllison - Member of the Short Circus
Irene CaraIris - Member of the Short Circus
Lily TomlinErnestine the Operator
Mel BlancWile E. Coyote (voice)
Tony Longo
Carroll O'Connor
Michael Landon
Jean Stapleton