Jeff Tracy / Preston (voice)

Scott Tracy (voice)

Virgil Tracy / Dr. Pringle / Saunders / TV Reporter / 1st Santa (voice)

Alan Tracy (voice)

Gordon Tracy / Brains / Kyrano / Straker / 2nd Santa (voice)

John Tracy / Scobie / Harman / Security Chief Joe (voice)

Lady Penelope Creighton-Ward / Nicky / Nurse Nimmo (voice)

Tin-Tin Kyrano / Grandma Tracy (voice)

Dr. Lang / Tanner (voice) (uncredited)