On screen
Cast
11 credited performers
David Graham
Professor Matthew Matic / Lieutenant Ninety / Freighter A14 (voice)
Sylvia Anderson
Jimmy Gibson / Miss Chevenitch (voice) (uncredited)
Paul Maxwell
Colonel Steve Zodiac / Mrs Doughty (voice)
Gerry Anderson
Robert the Robot (voice) (uncredited)
John Bluthal
Commander Wilbur Zero / Kazak (voice)
Graydon Gould
Mike Mercury / Film Narrator (voice)
George Murcell
Professor Rudolph Popkiss / Black Morgan (voice)
Nicholas Parsons
Sheriff Tex Tucker / Telegraph Operator Dan Morse (voice)
Kenneth Connor
Dusty the Dog / Rocky the Horse / Foreman (voice)
Denise Bryer
Martha 'Ma' Jones (voice)
Artwork unavailable
Michael Holliday
Sheriff Tex Tucker (singing voice) (uncredited)