
Quick answer — Katsumi Toriumi voices Byakuya Matou in Fate/Zero Season 2, Hazuki in Pokémon, Rai in Orphen and 2 more characters.
Katsumi Toriumi voices Byakuya Matou (Fate/Zero Season 2), Hazuki (Pokémon), Rai (Orphen), Shigeru Tomota (Megazone 23), Miyahito (Vampire Princess Miyu).
Byakuya Matou is voiced in Japanese by Katsumi Toriumi.