
Quick answer — Junichi Sugawara voices Hajime Tsukamoto in Detective Conan: Countdown to Heaven, Noppo in Mobile Suit Gundam: The 08th MS Team, Rob in Mobile Suit Gundam: The 08th MS Team and 4 more characters.
Junichi Sugawara voices Hajime Tsukamoto (Detective Conan: Countdown to Heaven), Noppo (Mobile Suit Gundam: The 08th MS Team), Rob (Mobile Suit Gundam: The 08th MS Team), Jean Benigni (Kaleido Star), Saizou (Martian Successor Nadesico), Shinkurou (Ninja Scroll), Shigeo Yamagishi (Shenmue the Animation).
Hajime Tsukamoto is voiced in Japanese by Junichi Sugawara.