Cast
Gerry Anderson
Robert the Robot (voice) (uncredited) • 39 episodes
David Graham
Lieutenant Ninety (voice) • 39 episodes
Paul Maxwell
• 42 episodes
Sylvia Anderson
• 43 episodes
Paul Maxwell
Colonel Steve Zodiac (voice) • 42 episodes
Sylvia Anderson
Doctor Venus (voice) • 43 episodes
John Bluthal
Commander Wilbur Zero (voice) • 51 episodes
John Bluthal
• 51 episodes
