Jeff Tracy / Professor Heinz Bodman (voice)
Scott Tracy (voice)
Virgil Tracy (voice)
Alan Tracy / TV Reporter (voice)
Gordon Tracy / John Tracy / Brains / Kyrano (voice)
Tin-Tin Kyrano / Grandma Tracy (voice)
Virgil Tracy / Operator Power / Tom (voice)
Colonel Harris / Colonel Benson / Rick O’Shea (voice)
Solarnaut Camp (voice)
International Space Control Commander (voice)
Professor Marshall (voice)