Chikao Nezu/Zi-O

Chikao Nezu (根津 誓夫) is a student of Amanogawa High and member of the Kamen Rider Club.

Kamen Rider Zi-O
After him and Chikao Nezu encountered Kamen Riders Zi-O & Geiz, he invited them into the Kamen Rider Club.

Portrayal
Chikao Nezu is portrayed by Yuya Hara (原 勇弥). As a child, Chikao is portrayed by Hidetoshi Akutsu (阿久津 秀寿).