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)