
Quick answer — Toku Nishio voices Conrad in Berserk, Kanichi Nishi in Tomorrow's Joe, Matsui in City Hunter and 2 more characters.
Toku Nishio voices Conrad (Berserk), Kanichi Nishi (Tomorrow's Joe), Matsui (City Hunter), Daimaru (Robot Carnival), Mr. Popo (Dragon Ball Z: The Return of Cooler).
Conrad is voiced in Japanese by Toku Nishio.