Capt. Fred Hamilton
Meela
Richard Holden
MacIntosh
Member of Hamilton's Team
Cmdr. Armstrong
Greta
Jack
Marseille
Dr. Max Wright
Oko
Halla
Peter Segura (as Vassili Karamesinis)
Etor
Col. Altman (as Fabio Roscioli)
Journalist (uncredited)
Reporter (uncredited)
Miller (uncredited)