Jeff Tracy / World Navy Commander (voice)
Scott Tracy (voice)
Virgil Tracy (voice)
Virgil Tracy / Dick O'Shea / Cravitz (voice)
Alan Tracy / Hector McGill / Atom Sub Reefer Lieutenant (voice)
Gordon Tracy / Parker / Brains / Culp / Atlantic Captain (voice)
John Tracy / Dr. Orchard / Atom Sub Reefer Captain / TV Reporter (voice)
Lady Penelope Creighton-Ward / Mrs. Files (voice)
Tin-Tin Kyrano / Grandma Tracy (voice)
Blackmer / Frank Hooper / Sir Harry (voice) (uncredited)
