John Armstrong
Steve Armstrong (voice)
Cliff Harrington
Mark Gordon / Commander Robinson / Narrator / Additional Voices (voice)
Richard Murphy
Big Bert Armstrong (voice)
Nancy Culluci
Little John / Additional Voices (voice)
Gerri Sorrells
Jamie Robinson (voice)
William Ross
Dr Smith / Draco / Additional Voices (voice)
Don Johnson
Dr Ned Armstrong (voice)
Judith Sackheim
Dr Mary Ann Armstrong (voice)
Joseph Zucatti
Dr Hook / Additional Voices (voice)
Greg Starr
General Watson / Additional Voices (voice)
Zambajil (voice)
Tom Clark
Prince Zardoz (voice)
Patricia Kobiyashi
Zandra (voice)
Mike Worman
Zuhl (voice)
