Evil Brain From Outer Space (1965)

aka: Super Giant 7, 8 & 9

A monstrous evil brain from the planet Balzaar leads his mutant Marpetians on a crusade to conquer the universe and unleash hideous monsters on Earth that spread deadly diseases. Now it's up to superhero Starman (Ken Utsui) to rescue Earth from the menace of the evil brain, while also battling armies of monsters the brain has sent against him. Also stars Junko Ikeuchi and Minoru Takada.