minami kotarou
Minami Kotarou is the main protagonist of both Kamen Rider Black and Kamen Rider Black RX.
He was captured by Gorgom and remade into cyborgs and infused with Kingstone. Kotarou received the "Stone of the Sun" to become Century King Black Sun. However, before the final brainwashing Soichiro Akizuki interrupted the final stage of the process with Kotarou barely escaping.
He then took the name of Kamen Rider Black, and vows vengeance against Gorgom.
After the downfall of Gorgom, Kotarou has gotten a job as a helicopter pilot in a business owned by the Sahara family, who have also taken him into their home. Kotarou is later captured by the Crisis Empire and offered a place in their group. When Kotarou refused, his King Stone was shattered and he was thrown into space where the sun's radiation mutated his King Stone and forcing him to mutated into Kamen Rider Black RX. With his new powers, he battles the Crisis Empire and thwarts their plans to take over Earth.