
Quick answer — Masaki Aizawa voices Ghetsis Harmonia in Pokémon Evolutions, Eiji Date in Hajime no Ippo: The Fighting!, Kazuyuki Izumi in Parasyte -the maxim- and 13 more characters.
Masaki Aizawa voices Ghetsis Harmonia (Pokémon Evolutions), Eiji Date (Hajime no Ippo: The Fighting!), Kazuyuki Izumi (Parasyte -the maxim-), Pedro Rodrigo (One Outs), Geun-Tae Lee (Yona of the Dawn), John Watson (Undead Murder Farce), Rowan Pidgeon (Black Lagoon), Shouryuu (The Twelve Kingdoms) and 8 more.
Ghetsis Harmonia is voiced in Japanese by Masaki Aizawa.