Mitsuo Yamaguchi (山口 光雄, Yamaguchi Mitsuo), better known by his stage name of Kappei Yamaguchi (山口 勝平, Yamaguchi Kappei) is a Japanese voice actor and actor from Fukuoka, affiliated with Gokū and 21st Century Fox. He is best known for the roles of Ranma Saotome (Ranma), Jackson Neil (Miracle Girls), Tombo (Kiki's Delivery Service), Yattaro (Kyattou Ninden Teyandee), InuYasha (InuYasha), Ryuichi Sakuma (Gravitation), L (Death Note), Usopp (One Piece), Hideyoshi (Law of Ueki), and Kaito Kid and Shinichi Kudo (Case Closed). His current starring roles include that of Raimon "Monta" Taro, the Deimon Devil Bats' ace receiver in Eyeshield 21.
Yamaguchi has appeared in eroge as Kyōya Ushihisa (牛久 京也, Ushihisa Kyōya). He made his first public appearance in North America at Otakon 2008; and was also a guest at Sakura-Con 2009. Yamaguchi's third appearance to date has been at Animazement in 2010.
He is married and has a daughter, Akane Yamaguchi (山口 茜), and a son, Ryunosuke Yamaguchi (山口 竜之介), who also are voice actors.
Description above from the Wikipedia article Kappei Yamaguchi, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo (voice)
Character: Roualt (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo / Kaito Kuroba (voice)
Character: Shesta (voice)
Character: Ryohei Nakanishi
Character: Yasuharu Musashino
Character: Sasuke (voice)
Character: Shinichi Kudo (voice)
Character: Daisaku Kusama
Character: Shinichi Kudo (voice)
Character: Feitan (voice)
Character: Ticket / ToQger Equipment (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo / Kaito Kuroba (voice)
Character: Shinichi Kudo / Kaitou Kid (voice)
Character: Ticket / ToQger Equipment / Narrator (voice)
Character: Billia (voice)
Character: Shinichi Kudo (voice)
Character: Teenage Jiromaru (voice)
Character: Daisaku Kusama
Character: Daitokuji (voice)
Character: Young Munchausen II (voice)
Character: Shinichi Kudo (voice)
Character: Katsumi Shibuya (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo (voice)
Character: Hirohiko Kazama (voice)
Character: Hajime Kindaichi (Voice)
Character: Kenichi Oono (voice)
Character: Daisaku Kusama (voice)
Character: Shinichi Kudo / Kaito Kuroba (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudou (voice)
Character: Shinichi Kudo / Kaito Kid (voice)
Character: Shinpachi Nagakura (voice)
Character: Mulmul (voice)
Character: Kenichi Oono (voice)
Character: Hiroaki Kusano (voice)
Character: Scrib Lowengren (voice)
Character: Kaito Kid / Shinichi Kudou (voice)
Character: Fujino (voice)
Character: ToQger equipment (voice)
Character: Shinichi Kudo (voice)
Character: Inuyasha / Ranma Saotome (voice)
Character: Parasect (voice)
Character: Barubeat (voice)
Character: Shinichi Kudo / Kaito Kid (voice)
Character: Michael (voice)
Character: Ranma Saotome ♂ (voice)
Character: Ranma Saotome ♂ (voice)
Character: Ranma Saotome ♂ (voice)
Character: Daisaku Kusama (voice)
Character: Shinichi Kudo (voice)
Character: Oscar Cloud (voice)
Character: Delibird (voice)
Character: Shibuya (voice)
Character: Flappy (voice)
Character: Hanappe Yamada (voice)
Character: Flappy (voice)
Character: White Deer (voice)
Character: Robin Baxter (voice)
Character: Comédien de doublage de Usopp – Japon
Character: Manabu (voice)
Character: Ticket (voice)
Character: Shin'ichi Kudo (voice)
Character: Shinichi Kudo (voice)
Character: Scrib Lowengren
Character: Kaito Kid / Kaito Kuroba
Character: Chimchar (voice)
Character: Ticket (voice)
Character: Ticket (voice), ToQger Equipment Voice
Character: Sora Hiroi (voice)
Character: Lashes (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo (voice)
Character: Shinichi Kudo (voice) / Kaito Kuroba (voice)
Character: Shinichi Kudo (voice)
Character: Kaito Kuroba (voice)
Character: Tsutomu Yamaguchi (voice)
Character: Ticket (voice), ToQger Equipment Voice
Character: ToQger Equipment Voice
Character: Shinichi Kudou (voice)
Character: Kaito Kid / Shinichi Kudou (voice)
Character: Kaito Kuroba / Kaito Kid (voice)