Donald Gray was born Eldred Tidbury in 1914 at Tidburys Toll, South Africa.
as Colonel White / Captain Black / The Mysterons (voice)
as The Mysterons / Colonel White / Captain Black (voice)
as Captain White / Captain Black / The Mysterons (voice)
as Colonel White / Captain Black / The Mysterons (voice)
as Father Conrad(2 eps)
as Sir John Brinder(1 ep)
as The Mysterons / Colonel White / Captain Black (voice)(32 eps)
as Polly's Husband (uncredited)
as Inspector Wills
as Extra (uncredited)
as Captain Ross
as Headmaster
as Col. George Gordon
as Robert Maitland
as TV Program Announcer (uncredited)
as Paul Merton(1 ep)
as Mark Saber(220 eps)
as Jimmy Thompson
as William Peck
as Stukely
as Peter Burroughs
as Ted Fleming
as James Martin
as Albert de Courcey
as Young Yacht Guest (uncredited)
as Don (as Eldred Tidbury) (uncredited)
as Chauncey (as Eldred Tidbury)