Ken Yamaguchi(山口 健Yamaguchi Ken), (1956-2011), was a seiyū from Tokyo (Fukushima Prefecture originally). He was last represented by OYS Produce, his own company. He is most known for the roles of Asuraman, The Omegaman, Prisman (Kinnikuman: Scramble for the Throne), Genji Togashi (Sakigake!! Otokojuku), Flazzard (Dragon Quest: Dai no Daibōken), Tarantula Arachne (Saint Seiya), and Gakurandar (Machine Robo: Battle Hackers).