Profile photo of Kappei Yamaguchi

Kappei Yamaguchi

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 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).  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

2026
Detective Conan Episode "ZERO" The Shinichi Kudo Aquarium Case

as Shinichi Kudo (voice)

Movie
2026
Gintama: Yoshiwara in Flames

as Inorin (voice)

Movie
2025
Detective Conan: One-Eyed Flashback

as Shinichi Kudo (voice)

Movie
2024
Detective Conan: The Million-Dollar Pentagram

as Kaito Kid / Shinichi Kudou (voice)

Movie
2022
One Piece Film Red

as Usopp (voice)

Movie
2009
Death Note Relight 1: Visions of a God

as L (voice)

Movie
1989
Kiki's Delivery Service

as Tombo (voice)

Movie
2025
Mechanical Marie

as Carl Ojisan (voice)

TV Show
2024
Ranma1/2

as Ranma Saotome (voice)

TV Show
2018
Super Dragon Ball Heroes

as Fu (voice)

TV Show
2011
Hunter x Hunter

as Feitan (voice)

TV Show
2006
Death Note

as L (voice)

TV Show
1999
One Piece

as Usopp (voice)

TV Show
1996
Detective Conan

as Shinichi Kudo (voice)

TV Show
1989
Ranma ½

as Ranma Saotome ♂ (voice)

TV Show