Bumpei Ai

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

Shigeru Jo joins the evil organization Black Satan after the death of his close friend and mentor Goro Numata. He, promised power, and fueled by a desire for revenge, undergoes surgery to become one of Black Satan's super warriors. However, Shigeru knows that Black Satan were in fact the murderers of his friend; he was using Black Satan in order to gain new powers. The newly powered up Shigeru escapes from the Black Satan headquarters before they can brainwash him into following their campaign of evil and becomes Kamen Rider Stronger. While escaping from Black Satan, Stronger meets Yuriko Misaki another cyborg warrior created by Black Satan who has the ability to transform into Electronic Wave Humanoid Tackle. Together they fight the evil Black Satan and later the Delzer Army to restore peace in Japan.

Takeshi Yamato, a twenty-two-year-old young man lives a double life. During the daytime, he is a rookie but popular science teacher at a junior high school in Tokyo. But after school and on Sundays he works as a member of the elite UGM (Utility Government Members).