Cast
David Holliday
Virgil Tracy (voice)
Paul Maxwell
Steve Zodiac / Captain Grey (voice)
David Graham
Parker / Brains (voice)
Sylvia Anderson
Lady Penelope (voice)
Francis Matthews
Captain Scarlet (voice)
Ed Bishop
Captain Blue (voice)
Donald Gray
The Mysterons / Colonel White / Captain Black (voice)
Gerry Anderson
Robert the Robot (voice, uncredited)
Shane Rimmer
Scott Tracy (voice)