as Lady Penelope Creighton-Ward (voice)

as John Tracy / The Hood (voice)

as Space Captain Greg Martin (voice)

as Jeff Tracy (voice)

as Tin-Tin Kyrano (voice)

as Gordon Tracy / Brains / Aloysius Parker (voice)

as Captain Paul Travers (voice)

as Dr. Ray Pierce (voice)

as Space Navigator Brad Newman / Swinging Star Compere (voice)

as Scott Tracy (voice)

as Dr. Tony Grant / Angry Young Man / Public Relations Officer (voice)

as Virgil Tracy / Space Exploration Center President (voice)

as Alan Tracy / Messenger (voice)

as Himself (voice)

as Cliff Richard Jr. (voice)