Gorgom
This is the list of characters in the 1987 Kamen Rider Series, Kamen Rider Black and its 1988 sequel Kamen Rider Black RX.
Kohtaro Minami (南 光太郎 Minami Kōtarō) is a 19-year-old man who became a cyborg after the Gorgom captured him and his stepbrother Nobuhiko. Using the power of the King Stone, he shouts "Henshin" and poses to become the mighty Kamen Rider Black (仮面ライダーBLACK Kamen Raidā Burakku). He is referred by Gorgom as "Black Sun". During the events of Black RX, Kohtaro lives with the Sahara Family and was captured by the Crisis Empire when the Skullma were sent to bring him to them. Refusing to side with the Crisis Empire, they shattered his King Stone into two pieces, thus rendering him unable to transform into Kamen Rider Black. He was then thrown into outer space, where the sun's radiation mutated his King Stone and allowing him to evolve into Kamen Rider Black RX (仮面ライダーBLACK RX Kamen Raidā Burakku Āru Ekkusu) to fight the Crisis Empire and the Strange Demon Soldiers.
Kohtaro Minami is portrayed by Tetsuo Kurata (倉田 てつを Kurata Tetsuo).
Nobuhiko Akizuki (秋月 信彦 Akizuki Nobuhiko) is the stepbrother of Kohtaro Minami who was also captured by Gorgom to become a cyborg like his stepbrother, However he was abandoned and was hibernated until he emerges as the Century King Shadow Moon (世紀王シャドームーン Seiki Ō Shadō Mūn) armed with his King Stone and his Satan Sabre. In the series finale, Shadow Moon was weakened by Kamen Rider Black using the Satan Sabre to slash the King Stone and left him inside the Gorgom Headquarters when it explodes. During the events of Black RX, he mysteriously came back to seek revenge against Kohtaro. He now uses the twin Shadow Sabers similar to the Satan Sabre. He was finally defeated by RX when he thrust the Revolcane through his King Stone. He turned good shortly before he died and finally reverted to Nobuhiko.
Nobuhiko Akizuki is portrayed by Takahito Horiuchi (堀内 孝人 Horiuchi Takahito), while Shadow Moon is voiced by Masaki Terasoma (寺杣 昌紀 Terasoma Masaki).
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