
Quick answer — Shun Oguri voices Mario Minakami in Rainbow, Akio Asakura in Wangan Midnight, Alfons Heiderich in Fullmetal Alchemist: The Movie - Conqueror of Shamballa and 4 more characters.
Shun Oguri voices Mario Minakami (Rainbow), Akio Asakura (Wangan Midnight), Alfons Heiderich (Fullmetal Alchemist: The Movie - Conqueror of Shamballa), Third (Jyu-Oh-Sei: Planet of the Beast King), Keisuke Suga (Weathering With You), Mad Treasure (One Piece Film: Gold), Totakeke (Doubutsu no Mori).
Mario Minakami is voiced in Japanese by Shun Oguri.