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