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Don Mason
Captain Troy Tempest / Solaster Leader (voice)
Robert Easton
Lieutenant George Lee 'Phones' Sheridan / Corda / WSP Commander (voice)
Ray Barrett
Commander Sam Shore / Sub-Lieutenant John Horatio Fisher / King Titan / Various Characters (voice)
Lois Maxwell
Lieutenant Atlanta Shore / Milly Carson / Marineville Tracking Station #2 (voice)
David Graham
Admiral Henry Carson / Marin / Nucella / Various Characters (voice)