Santo vs The Martian Invasion (1967)

aka: Santo Contra La Invasion De Los Marcianos

El Santo battles Martians, in the form of very sexy space chicks, intent on taking over Earth. Also stars Wolf Ruvinskis and El Nazi. Also with Maura Monti, Eva Norvind, Belinda Corel and Gilda Mirós. (In Spanish language, with English subtitles).