Kōichi Yamadera (June 17, 1961 - ) is a Japanese male seiyū, actor, and tarento from Shiogama, Miyagi Prefecture. He graduated from Tohoku Gakuin University's economics school, and is currently affiliated with the Tokyo Actor's Consumer's Cooperative Society.
His nickname is Yama-chan. As a radio personality, he is known as Bazooka Yamadera among other things. He is best known for his roles in Kaiketsu Zorori (Zorori), the Japanese dub of Full House (Joey Gladstone), Ranma ½ (Hibiki Ryōga/P-chan, blank">Alicia Keys Plays Free Show in Tokyo, Japan Entertainment News - November 30, 2007 _Jusenkyō Guide), Soreike! Anpanman (Cheese, Kabao, Kamameshidon), Ghost in the Shell (Togusa), Neon Genesis Evangelion (Kaji Ryōji), and Cowboy Bebop (Spike Spiegel). He is known for voicing Jim Carrey and Eddie Murphy in the Japanese language releases of their respective films.
Yamadera and his wife, Mika Kanai, work together providing voice talent for the long running Japanese cartoon, "Soreike! Anpanman" (1988).
