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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.

Unmet: Diary of a Neurosurgeon
as Takami Takeshi

The Inugami Family
as Isokawa

Wave, Listen to Me!
as Kureko Katsumi

The Files of Young Kindaichi
as Ken Izumaru

What Do You Really Do About Love?
as Jiro Okashita

We're Both Grooms
as Seto Takeshi

Evil God's Balance Public Security Analysis Team
as Shuzo Kunieda

Two People Who Can't Fall in Love

The Sunday Runoff

The Agent Family
as Toshio Sato

Memory's Technique
as Kazuno Tadashi

The Sun Does Not Move
as Miura

Gourmet Detective Goro Akechi
as Yasuya Dateh

Care Nin 2: The Flower in Your Heart
as Hirofumi Kudo

One Left Hand Shot

Fukushima 50
as Chairman of Japanese Nuclear Safety Commission

Nozaki Shuhei President of Bank
as Ryoma Kashiwagi

Mellow
as Furukawa Sakon

Yatsuhakamura
as 磯川警部

Sherlock: Untold Stories
as Takahisa Inui

Voice
as Kenichi Tadokoro

Only the Cat Knows
as Masaki

A Long Goodbye

Innocence, Fight Against False Charges
as Rintaro Ibusuki

For Love's Sake

Suits
as Yukio Karashima

Perfect World

Neck Bowed in the Rain
as Jingoro Gyoda

My Friend "A"
as President Kawashima

White and Yellow ~My Pancake Story from Hawaii~
as Sawano Kyoji [Nami's uncle]

Colors of Wind
as Kitta

Kiss that Kills
as Gunji Arai

Nozaki Shuhei - Auditor of Bank
as Ryoma Kashiwagi

Tales of the Bizarre: 2017 Fall Special

FACE - Cyber Hanzai Tokusouhan

Akira and Akira

Care Nin
as Hirofumi Kudo

Radiance
as Sano

Error

CRISIS: Special Security Squad

Blossoming Into a Family
as Seishiro Ishikawa

Death on Gokumon Island
as Inspector Isokawa

Prison Gate Island
as Inspector Isokawa

The Tokyo Wind Orchestra
as Kazuya Tachibana

Sniper
as Satoru Kanbe

Destiny-Like Love
as Fujii Yoji

Somebody's Xylophone

Lost ID
as Baba

99.9 Criminal Lawyer
as Inaba

Moribito: Guardian of the Spirit
as The Cooles

Ghost Theater
as Gota Nishikino

Before a Falling Star Fades Away
as 奈緒子の父

Gassoh

Till Death Do Us What?
as Yamashita

Scarecrow and Racket: Aki and Tamako’s Summer Vacation
as Masaya Odagiri

Miracle: Devil Claus' Love and Magic
as Natsuki Kurita

Nobunaga Concerto
as Yoshikage Asakura

A Samurai Chronicle

Rurouni Kenshin Part III: The Legend Ends
as Toshiyoshi Kawaji

Rurouni Kenshin Part II: Kyoto Inferno
as Toshiyoshi Kawaji