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1. Kamen Rider Black
2-4. Kamen Rider ZO
5. The Story of Tenka Osamu

Main
Masaru Aso was the lab assistant of geneticist Doctor Mochizuki, used as one of his experiments related to the creation of the Neonoid, enabling him to transform into a grasshopper-like being called Kamen Rider ZO. He fled into the mountainside and went i...
Supporting
After being kidnapped by the cult Gorgom on the night of their 19th birthday, stepbrothers Koutarou Minami and Nobuhiko Akizuki were submitted to a cyborg surgery with the purpose of becoming the candidates for the next Gorgom Creation King. Both of them ...