Sylvia Anderson

Lady Penelope Creighton-Ward (voice)

Ray Barrett

John Tracy / The Hood (voice)

Alexander Davion

Space Captain Greg Martin (voice)

Peter Dyneley

Jeff Tracy (voice)

Christine Finn

Tin-Tin Kyrano (voice)

David Graham

Gordon Tracy / Brains / Aloysius Parker (voice)

Paul Maxwell

Captain Paul Travers (voice)

Neil McCallum

Dr. Ray Pierce (voice)