Kappei Yamaguchi (山口 勝平 Yamaguchi Kappei?, May 23, 1965)is a Japanese seiyū and actor from Fukuoka, affiliated with Gokū[1] and 21st Century Fox}.

He is best known for the roles of Ranma Saotome (Ranma ½), 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?).[2] He made his first public appearance in North America at Otakon 2008;[3] and was also a guest at Sakura-Con 2009.[4][5] Yamaguchi's third appearance to date has been at Animazement in 2010.

He is married and has a son.[6]


Television animation


Film animation

Internet animation

Video games

Dubbing roles


  • M&M's (Japanese) (Red M&M)

Anime music and audio dramas

Dialogue roles (dramas)

Singing roles

Other music CD albums


  • Rollin' (Futureland/Youmex, TYDY-5147, 1990)
  • A Boy (Futureland/Youmex, TYCY-5185, 1991)
  • Mini-Best (Meldac/Nippon Crown, MECH-18004, 1995)
  • Unbalance City (Nippon Columbia, COCC-13586, 1996)

With other seiyū

  • Message: Seiyū Collection Volume 1 (Platz, PLCA-808) (1990)

Radio Shows



  • Yamaguchi's nick name is "saru", which means "monkey" in Japanese; translated into English, his personal web blog is titled: Monkey's Kingdom. Apparently this comes from his love for the monkey character in the classical Chinese story Journey to the West. He has actually voiced the monkey's role in an adaption of the original story, Monkey Typhoon and played the role in various stage adaptations.


External links

In English

In Japanese

ar:كابيه ياماغتشي ca:Kappei Yamaguchi ko:야마구치 갓페이 id:Kappei Yamaguchi it:Kappei Yamaguchi ru:Ямагути, Каппэй fi:Kappei Yamaguchi tl:Kappei Yamaguchi vi:Yamaguchi Kappei zh:山口勝平

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