Dr. Rivus
Robert DeLancie (1 episode)
Dr. Thaddeus Brand
The Invader (voice)
Howard Evans
Albert Campbell (9 episodes)
Robert Wolcott (1 episode)
Nigel the Advisor
Nigel the Advisor (voice) (3 episodes)
Jeff Kane (9 episodes)
Simon Sifter (13 episodes)
Tseebo (voice) (3 episodes)
Rabbi Adler (1 episode)
Egghead (voice) (1 episode)
Professor Elliott Randolph (2 episodes)
Dewey Ottman (voices)
Secretary of Defense
Rick Davis
Judge Smollet (1 episode)
Firefly (voice) (1 episode)
Professor Ivo / M.O.N.Q.I. (voice) (1 episode)
Professor Ivo / Amazo / M.O.N.Q.I. (voice) (1 episode)
Professor Ivo (voice) (1 episode)
Robert Stark (7 episodes)
Oliver / Forever Knight #1 (voice) (2 episodes)
Otto Octavius (voice) (4 episodes)
Otto Octavius / Doctor Octopus (voice) (1 episode)
Doctor Octopus (voice) (3 episodes)
Master Planner / Otto Octavius (voice) (1 episode)
Master Planner (voice) (2 episodes)
Master Planner / Doctor Octopus (voice) (1 episode)
Tom Lennox (24 episodes)
Dr. Sydney Field (1 episode)
Troopmaster (voice)
Larry Fleinhardt (99 episodes)
Writer (1 episode)
David Clinton (voice) (2 episodes)
Langstrom (voice) (3 episodes)
Philip Gascon
Sidney Poindexter (voice) (2 episodes)
Director (1 episode)
Muru (voice)
Fenwick (voice)
Major (voice) (2 episodes)
Liberty (voice)
Raju / Monkey (voice) (1 episode)
(voice)
Fido (voice)
Narrator (voice)
Lawrence Dixon
John Cage (112 episodes)
Director (3 episodes)
David Langley
Tire Repairman
Roy Dowd
Thomas Renfield
Austin Haggard (segment "Let the Punishment Fit the Crime") (1 episode)
Son Writer
Alan Birch (22 episodes)
Lewis Rickett
Gary Granger
Mario (1 episode)
Marty
Bradley Grist (15 episodes)
Stuart
Sedgwick
Jack Solow
Dr. Janosz Poha
Steve Cooper (1 episode)
Cyrus Kinnick
Joe Kovacs
Stingo
Galen