Masaru Aso was the lab assistant of geneticist Doctor Mochizuki, used as one of his experiments related the creation of the Neo Organism, enabling him to transform into a grasshopper-like being called Kamen Rider ZO. He fled into the mountainside and went into a coma before he was awakened by a telepathic call two years later with an unconscious urge to protect Hiroshi Mochizuki, the son of Doctor Mochizuki.

Credits: TheMovieDb.

Film Cast:

• Masaru Asou / Kamen Rider ZO: Hiroshi Tsuchikado
• Doctor Mochizuki: Isao Sasaki
• Hiroshi Mochizuki: Shohei Shibata
• Seikichi Mochizuki: Hiroshi Inuzuka
• Reiko: Naomi Morinaga
• Kuroda: Kenji Ohba
• Nishimura: Masaru Yamashita
• Miyazaki: Iori Sakakibara
• Neo Organism / Doras (voice): Shingo Yuzawa

Film Crew:

• Director: Keita Amemiya
• Screenplay: Noboru Sugimura
• Music: Eiji Kawamura
• Costume Design: Yasuhiro Nirasawa
• Special Effects: Shuichi Kokumai
• Visual Effects: Tamotsu Shinohara
• Stunts: Jiro Okamoto
• Stunts: Kazutoshi Yokoyama
• Stunts: Seiji Takaiwa
• Stunts: Kiyohito Nakagawa
• Creator: Shotaro Ishinomori
• Action Director: Osamu Kaneda

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