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This article is about a/an villain/ally in Kamen Rider Wizard and Kamen Rider Fourze.
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Nezumi 2

Chikao learns that the Monster League had been exploited by Banba.

Chikao Nezu (根津 誓夫 Nezu Chikao) is a member of the Monster League and is nicknamed "Nezumi" (ネズミ Rat) because of his small and wiry frame as well as a pun on his last name.

In a fight, he is a very competent hand-to-hand fighter, and is actually more durable then what his body might suggest.

Behind the scenes

Portrayal

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

Basis

Nezu's nickname Nezumi came from a character in the Inazuman manga. He was part of a gang aligned with the Neo-Human Empire, serving as a spy and informant.

Sougo Tokiwa (future, Mirror World) - Geiz Myokoin - Woz (black, white)
Future Kamen Riders
2022: Rentaro Kagura - Isamichi Konjo
2040: Mondo Douan
2121: Rento Makina
Ginga
Rider Time Ryuki Riders
Ishihashi - Tozuka - Kimura - Ishida - Abyss - Odin
Other Riders
G3 Team
Movie-exclusive Riders
Barx - Zonjis - Zamonas
Ziku-Driver - Ridewatches - BeyonDriver - Mirai Driver (Shinobi, Hattari, Quiz, Kikai, Ginga) - Zikan Girade - Zikan Zax - Ride HeiSaber - Zikan Despear - Saikyo Girade - Zikan Jaclaw - Faizphone X - Taka Watchroid - Kodama Suika Arms - Ride Striker - Time Mazine - Kurogane Oogama - Unnamed Giant Wasp Mecha
Others/Terminology
Rider Armors - Ridewatch Holder - Oma Advent Calendar - Future Note - Time Break/Burst
Allies
9 5 DO: Geiz Myoukouin - Tsukuyomi - Junichiro Tokiwa
Others
Futaros - Iroha Kagura - Master Gamano - Sara - Ms. Sailor
Resistance: Resistance Captain
Agito: Shouichi Tsugami - Takahiro Omuro
Ryuki: Shinji Kido - Dark Shinji - Ren Akiyama - Takeshi Asakura - Miyuki Tezuka - Jun Shibaura - Goro Yura - Kamen Rider Odin
555: Takumi Inui - Masato Kusaka
Blade: Kazuma Kenzaki - Hajime Aikawa
Hibiki: Tomizo Todayama - Kyosuke Kiriya
Kabuto: Arata Kagami - Sou Yaguruma - Shun Kageyama
Den-O: Ryotaro Nogami
Kiva: Jiro
Decade: Tsukasa Kadoya - Daiki Kaito
OOO: Eiji Hino
Fourze: Gentaro Kisaragi
Wizard: Haruto Soma - Kosuke Nitoh
Gaim: Kouta Kazuraba - Kaito Kumon
Ghost: Takeru Tenkuji - Makoto Fukami
Ex-Aid: Emu Hojo - Hiiro Kagami - Kuroto Dan
Build: Sento Kiryu - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro
Others
Chuta Ohsugi - Daita Kondou - Chikao Nezu - Hina Izumi - Shibuya Hachioji - Narita Kisarazu - Misora Isurugi - Owner - Momotaros - Urataros - Kintaros - Ryutaros - Daisuke Okubo - Amane Kurihara - Mana Kazaya
Swartz - Heure - Ora
Movie Exclusive
Tid
Another Build - Another Ex-Aid - Another Fourze - Another Faiz - Another Wizard - Another OOO - Another Gaim - Another Den-O - Another Double - Another Kuuga - Another Ghost - Another Shinobi - Another Quiz - Another Ryuga - Another Kikai - Another Zi-O - Another Ryuki - Another Blade - Another Agito - Another Hibiki - Another Kiva - Another Kabuto
Other Villains
Kasshin - Humanoise - Yaminin