Production CompanyEstudios América6 titlesTitle (Original title) (Year)Neutron and the Black MaskNeutrón el enmascarado negro (1960)Neutron Battles the Karate AssassinsLos asesinos del karate (1965)Planet of the Female InvadersEl planeta de las mujeres invasoras (1966)Planetary GiantsGigantes planetarios (1966)Operación 67 (1967)Passport to DeathPasaporte a la muerte (1968)