Jeff Tracy / World Navy Commander (voice)

Scott Tracy (voice)

Virgil Tracy / Dick O'Shea / Cravitz (voice)

Alan Tracy / Atom Sub Reefer Lieutenant (voice)

Gordon Tracy / Parker / Brains / Atlantic Captain (voice)

John Tracy / Atom Sub Reefer Captain / TV Reporter (voice)

Lady Penelope Creighton-Ward (voice)

Tin-Tin Kyrano (voice)

Frank Hooper / Sir Harry (voice) (uncredited)