Yamaguchi Ken was born March 24, 1956 in Fukushima Prefecture, Japan. He was a voice actor (seiyuu). His blood type was A. His real name was Yamaguchi Kiyoshige (山口清成). Yamaguchi was formerly affiliated with Production Baobab but then became representative director of newly founded talent agency OYS Produce and left Baobab. Before that he graduated from Toho Gakuen Voice Acting school and was at Aoni Production. Yamaguchi died on October 24, 2011, due to acute heart failure.
| Episode |
ブラック・ラグーン Lock 'n' Load Revolution |
2006 |
| Episode |
ブラック・ラグーン Guerrillas in the Jungle |
2006 |
