Mantarō Koichi (小市 慢太郎 , Koichi Mantarō), born on February 15, 1969 in Osaka, is a Japanese actor. He occasionally does voice work for anime and TV dramas. He's affiliated with Gekidan M.O.P., an agency that mostly assigns work for live action movies and TV series. His bloodtype is B.
as Takami Takeshi(11 eps)
as Isokawa(2 eps)
as Kureko Katsumi(8 eps)
as Ken Izumaru(2 eps)
as Jiro Okashita(10 eps)
as Seto Takeshi
as Shuzo Kunieda(10 eps)
as Toshio Sato(1 ep)
as Kazuno Tadashi
as Miura(6 eps)
as Yasuya Dateh(1 ep)
as Hirofumi Kudo
as Chairman of Japanese Nuclear Safety Commission
as Ryoma Kashiwagi(5 eps)
as Furukawa Sakon
as 磯川警部
as Takahisa Inui(1 ep)
as Kenichi Tadokoro(10 eps)
as Masaki
as Rintaro Ibusuki(10 eps)
as Yukio Karashima(1 ep)
as Jingoro Gyoda
as President Kawashima
as Sawano Kyoji [Nami's uncle](25 eps)
as Kitta
as Gunji Arai(10 eps)
as Ryoma Kashiwagi(8 eps)
as Hirofumi Kudo
as Sano
as Seishiro Ishikawa
as Inspector Isokawa
as Inspector Isokawa
as Kazuya Tachibana
as Yasui(1 ep)
as Satoru Kanbe
as Fujii Yoji(8 eps)
as Baba(9 eps)
as Inaba(2 eps)
as The Cooles(9 eps)
as Koji Mashima(6 eps)
as Gota Nishikino
as 奈緒子の父
as Yamashita
as Masaya Odagiri
as Natsuki Kurita
as Yoshikage Asakura(2 eps)
as Toshiyoshi Kawaji
as Toshiyoshi Kawaji
as Takahiko Isobe(1 ep)
as Kobayakawa
as Akio Sawada(11 eps)
as Ushii Takeshi(10 eps)
as Shuji Tanigawa(11 eps)
as Tojiro Tsuda
as Zen
as Shiro Kume(8 eps)
as Kenzo Furuyama
as Muramatsu(1 ep)
as Kinjiro Okano
as Wakaizumi
as Hiroshi Kamimura(1 ep)
as Sawazaki
as Makoto Watanabe(11 eps)
as Sugawara(1 ep)
as Yamanaka Producer
as Sakai
as Shigenobu
as Yamagishi
as Tasuku Yoshioka
as Yagi(1 ep)
as Galford
as Galford(2 eps)
as Manabu Hibiya（日比谷 学）(12 eps)
as Ken Izumaru(2 eps)
