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.
A Long Goodbye
One Left Hand Shot
Concent
As Yamagishi
No-Pants Girls: Movie Box-ing2
Neck Bowed in the Rain
As Jingoro Gyoda
Yatsuhakamura
As 磯川警部
Walking My Life
As Wakaizumi
Pink Subaru
As Zen
The Sunday Runoff
The Summit: A Chronicle Of Stones to Serenity
As Kinjiro Okano
A Samurai Chronicle
Death on Gokumon Island
As Inspector Isokawa
Ai wa mieru: Zenmô fûfu ni yadotta chiisana inochi
Piece: Fragments of a Memory
As Tojiro Tsuda
Perfect Blue
Karaoke Terror
Care Nin 2: The Flower in Your Heart
As Hirofumi Kudo
Tokyo Refugees
As Kobayakawa
Locomotive Teacher
Antenna
As Shigenobu
The Vulture
Sixteen
As Sawazaki
Blossoming Into a Family
As Seishiro Ishikawa
Gassoh
Ghost Theater
As Gota Nishikino
Till Death Do Us What?
As Yamashita
Samurai Shodown 2
As Galford
Reincarnation
As Yamanaka Producer
Ichigo Chips
As Sakai
Platonic Sex
The Sparkling Amber
Stake Out
As Tasuku Yoshioka
Radiance
As Sano
Scarecrow and Racket: Aki and Tamako’s Summer Vacation
As Masaya Odagiri
Before a Falling Star Fades Away
As 奈緒子の父
Perfect World
For Love's Sake
Colors of Wind
As Kitta
Prison Gate Island
As Inspector Isokawa
Only the Cat Knows
As Masaki
Rurouni Kenshin Part II: Kyoto Inferno
As Toshiyoshi Kawaji
Rurouni Kenshin Part III: The Legend Ends
As Toshiyoshi Kawaji
Care Nin
As Hirofumi Kudo
Miracle: Devil Claus' Love and Magic
As Natsuki Kurita
Sniper
As Satoru Kanbe
The Hidden Blade
My Friend "A"
As President Kawashima
Somebody's Xylophone
Fukushima 50
As Chairman of Japanese Nuclear Safety Commission
The End of Summer
Mellow
As Furukawa Sakon
Tales of the Bizarre: 2017 Fall Special
The Tokyo Wind Orchestra
As Kazuya Tachibana
Error
Osaka Love & Soul
Memory's Technique
As Kazuno Tadashi
Azamijô no lullaby
The Agent Family
As Toshio Sato
Samurai Spirits 2: Asura Zanmaden
As Galford
Wave, Listen to Me!
As Kureko Katsumi
The Inugami Family
As Isokawa
FACE - Cyber Hanzai Tokusouhan
Shinigami-kun
Ryōmaden
HUNT - Tax Investigation Officer
As Shiro Kume
Wonderful Single Life
As Shuji Tanigawa
Nobunaga Concerto
As Yoshikage Asakura
Attention Please
As Makoto Watanabe
Hero
As Yagi
Emergency Room 24 Hours
As Manabu Hibiya（日比谷 学）
Evil God's Balance Public Security Analysis Team
As Shuzo Kunieda
Two People Who Can't Fall in Love
Lost ID
As Baba
White and Yellow ~My Pancake Story from Hawaii~
As Sawano Kyoji [Nami's uncle]
MR.BRAIN
Akira and Akira
Suits
As Yukio Karashima
Kiss that Kills
As Gunji Arai
頭取 野崎修平
As Ryoma Kashiwagi（柏木 竜馬）
Nozaki Shuhei - Auditor of Bank
As Ryoma Kashiwagi
Sherlock: Untold Stories
As Takahisa Inui（乾 貴久）
Hanasaki Mai Speaks Out
As Takahiko Isobe（磯部 隆彦）
Umanohone: The Legendary Sword
Voice
As Kenichi Tadokoro
CSI: Crime Scene Talks
AIBOU: Tokyo Detective Duo
What Do You Really Do About Love?
As Jiro Okashita
The Files of Young Kindaichi
As Ken Izumaru
The Hours of My Life
As Akio Sawada
Kurokouchi
As Ushii Takeshi
Destiny-Like Love
As Fujii Yoji
CRISIS: Special Security Squad
Innocence, Fight Against False Charges
As Rintaro Ibusuki
Moribito: Guardian of the Spirit
As The Cooles
Unmet: Diary of a Neurosurgeon
As Takami Takeshi
Angels with Broken Wings
As Sugawara
Matrilineal Family
Steel Frame
Gourmet Detective Goro Akechi
As Yasuya Dateh
The Sun Does Not Move
As Miura
Bungo Japanese Literature Cinema
As Muramatsu
The Files of the Young Kindaichi
As Ken Izumaru