
Quick answer — Hiroshi Iwasaki voices Mezarte Ou in Maquia: When the Promised Flower Blooms, Gonzo Kagemori in Daemons of the Shadow Realm, Saito in Tiger & Bunny and 14 more characters.
Hiroshi Iwasaki voices Mezarte Ou (Maquia: When the Promised Flower Blooms), Gonzo Kagemori (Daemons of the Shadow Realm), Saito (Tiger & Bunny), Bacchus (Rage of Bahamut: Genesis), Tasumasa (Deaimon: Recipe for Happiness), Masopho (Dragon Quest: The Adventure of Dai), Galand (The Seven Deadly Sins: Four Knights of the Apocalypse), 1nno (TERMINATOR ZERO) and 9 more.
Mezarte Ou is voiced in Japanese by Hiroshi Iwasaki.