Rikiya Koyama (born December 18, 1963) is a Japanese actor, voice actor, and narrator currently affiliated with Haiyuza Theatre Company. He has done popular voicing roles in Hajime no Ippo, Utawarerumono, Kamen no Maid Guy, and Yakuza, and has become well known for voicing Yamato in Naruto Shippuden and Kogoro Mouri in Case Closed. He is the official dub-over artist of George Clooney, Kiefer Sutherland, Dwayne Johnson and Ma Dong-seok. Koyama had several contributions with Nintendo such as Metroid: Other M, Pokémon, Xenoblade Chronicles X, Fire Emblem Heroes, and Dragalia Lost.
