From Bulbapedia, the community-driven Pokémon encyclopedia.
Masataka Azuma (Japanese: 我妻正崇 Azuma Masataka) is a Japanese seiyū for the Pokémon anime.
Azuma was born sometime on January 25, in Tokyo, Japan. He became a seiyū as an adult and mostly got minor roles. He voiced one of his best-known roles as Oreburgh City Gym Leader Roark, during the Diamond & Pearl series of the Pokémon anime. Azuma is currently affiliated with Max Mix, but apparently hasn't had any roles since 2009.
Other non-Pokémon roles