Peter DyneleyJeff Tracy / World Navy Commander (voice) | Jeff Tracy / World Navy Commander (voice) |
Shane RimmerScott Tracy (voice) | Scott Tracy (voice) |
David HollidayVirgil Tracy (voice) | Virgil Tracy (voice) |
Jeremy WilkinVirgil Tracy / Dick O'Shea / Cravitz (voice) | Virgil Tracy / Dick O'Shea / Cravitz (voice) |
Matt ZimmermanAlan Tracy / Hector McGill / Atom Sub Reefer Lieutenant (voice) | Alan Tracy / Hector McGill / Atom Sub Reefer Lieutenant (voice) |
David GrahamGordon Tracy / Parker / Brains / Culp / Atlantic Captain (voice) | Gordon Tracy / Parker / Brains / Culp / Atlantic Captain (voice) |
Ray BarrettJohn Tracy / Dr. Orchard / Atom Sub Reefer Captain / TV Reporter (voice) | John Tracy / Dr. Orchard / Atom Sub Reefer Captain / TV Reporter (voice) |
Sylvia AndersonLady Penelope Creighton-Ward / Mrs. Files (voice) | Lady Penelope Creighton-Ward / Mrs. Files (voice) |
Christine FinnTin-Tin Kyrano / Grandma Tracy (voice) | Tin-Tin Kyrano / Grandma Tracy (voice) |
| JJohn TateBlackmer / Frank Hooper / Sir Harry (voice) (uncredited) | Blackmer / Frank Hooper / Sir Harry (voice) (uncredited) |