Ken Yamaguchi was born on April 24, 1956 in Fukushima, Japan. He is known for his work on Appurushido: Ekusu makina (2007), Doragon bôru Z: Kono yo de ichiban tsuyoi yatsu (1990) and Kikô Kantai dairugger XV (1982). He died on October 24, 2011 in Japan.