Kamen Rider Stronger(1975)

The heavens call. The earth cries out. The crowds roar, all calling on me to strike back at evil. Now listen up, villains! I am the warrior of justice, the Masked Rider Stronger.

Kamen Rider Stronger is a Japanese tokusatsu series following Shigeru Jo, who infiltrates the evil organization Black Satan seeking revenge for his mentor's murder. Promised superhuman power through surgical enhancement, Shigeru secretly plans to escape before the group can brainwash him into their service. He flees Black Satan's headquarters as the newly transformed Kamen Rider Stronger, determined to dismantle the organization from within. On his mission, Stronger encounters Yuriko Misaki, a fellow cyborg warrior who can transform into the formidable Electronic Wave Humanoid Tackle. United against their creators, the two fighters battle Black Satan and the subsequent threat of the Delzer Army to protect Japan. The series blends action, espionage, and moral complexity as Stronger navigates his dual nature as both weapon and hero.