
Quick answer — Kouichi Kitamura voices Murao Mima in Key the Metal Idol, Helmut Wolf in Monster, Roujin in Ghost in the Shell: Stand Alone Complex and 7 more characters.
Kouichi Kitamura voices Murao Mima (Key the Metal Idol), Helmut Wolf (Monster), Roujin (Ghost in the Shell: Stand Alone Complex), Miyako (Akira), Nenji Kashiwazaki (Rurouni Kenshin), Abraham (Treasure Island), Anatoray Emperor (Last Exile), Albert (Golgo 13: The Professional) and 2 more.
Murao Mima is voiced in Japanese by Kouichi Kitamura.