Peter Dyneley
Jeff Tracy / World Navy Commander (voice)
Shane Rimmer
Scott Tracy (voice)
David Holliday
Virgil Tracy (voice)
Jeremy Wilkin
Virgil Tracy / Dick O'Shea / Cravitz (voice)
Matt Zimmerman
Alan Tracy / Hector McGill / Atom Sub Reefer Lieutenant (voice)
David Graham
Gordon Tracy / Parker / Brains / Culp / Atlantic Captain (voice)
Ray Barrett
John Tracy / Dr. Orchard / Atom Sub Reefer Captain / TV Reporter (voice)
Sylvia Anderson
Lady Penelope Creighton-Ward / Mrs. Files (voice)
