Kappei Yamaguchi, a renowned Japanese voice actor and actor, was born in Fukuoka and is affiliated with Gokū and 21st Century Fox. He is particularly famous for his captivating performances in various anime and manga adaptations.
Throughout his illustrious career, Yamaguchi has lent his voice to an array of iconic characters, including Ranma Saotome from Ranma ½, Jackson Neil from Miracle Girls, Tombo from Kiki's Delivery Service, Yattaro from Kyattou Ninden Teyandee, InuYasha from InuYasha, Ryuichi Sakuma from Gravitation, L from Death Note, Usopp from One Piece, Hideyoshi from Law of Ueki, and Kaito Kid and Shinichi Kudo from Case Closed.
Yamaguchi's current starring roles include that of Raimon "Monta" Taro, the ace receiver of the Deimon Devil Bats in Eyeshield 21.
In addition to his work in anime, Yamaguchi has also appeared in eroge as Kyōya Ushihisa. He made his first public appearance in North America at Otakon 2008 and has since been a guest at Sakura-Con 2009 and Animazement in 2010.
In his personal life, Yamaguchi is married and has two children, Akane Yamaguchi and Ryunosuke Yamaguchi, who are both voice actors.