
Quick answer — Kouji Nakata voices Jin Munakata in Aim for the Ace!, Dr. Wheelo in Dragon Ball Z: The World's Strongest, Seizou Kasumi in Samurai Champloo and 3 more characters.
Kouji Nakata voices Jin Munakata (Aim for the Ace!), Dr. Wheelo (Dragon Ball Z: The World's Strongest), Seizou Kasumi (Samurai Champloo), Toshirou Odagiri (Detective Conan: Captured in Her Eyes), Ryuuzaki (Akagi), Wataru Kaido (Detective Conan: Strategy Above the Depths).
Jin Munakata is voiced in Japanese by Kouji Nakata.