Presented in Supercolorisation

David Graham

Professor Matthew Matic / Lieutenant Ninety / Freighter A14 (voice)· 6 ep

Sylvia Anderson

Doctor Venus / Eleanor Zero / Jonathan Zero (voice)· 5 ep

Paul Maxwell

Colonel Steve Zodiac (voice)· 3 ep

Gerry Anderson

Robert the Robot (voice) (uncredited)· 3 ep

John Bluthal

Commander Wilbur Zero / Jock Campbell (voice)· 3 ep

Graydon Gould

Mike Mercury / Film Narrator (voice)· 2 ep

George Murcell

Professor Rudolph Popkiss (voice) (credit only)· 2 ep

Nicholas Parsons

Sheriff Tex Tucker / Telegraph Operator Dan Morse (voice)· 1 ep

Kenneth Connor

Dusty the Dog / Rocky the Horse / Foreman (voice)· 1 ep

Denise Bryer

Martha 'Ma' Jones (voice)· 1 ep

Michael Holliday

Sheriff Tex Tucker (singing voice) (uncredited)· 1 ep