
Quick answer — Michio Hazama voices Walter von Schönkopf in Legend of the Galactic Heroes, Yukinojyo Onikura in GIBIATE, Hans Georg Schuwald in Monster and 5 more characters.
Michio Hazama voices Walter von Schönkopf (Legend of the Galactic Heroes), Yukinojyo Onikura (GIBIATE), Hans Georg Schuwald (Monster), Paul Duncan (PLUTO), Kounosuke Jii (Magic Kaito 1412), Bruno J. Global (Macross), Nirasaki (Memories), George Darwin (Leviathan).
Walter von Schönkopf is voiced in Japanese by Michio Hazama.