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.

Kappei Yamaguchi is known for work in acting across film and television. New Release currently presents 30 verified screen credits connected to this profile. Selected work includes Detective Conan: The Counterfeit Case of Ultra 30 (2026), Gintama the Movie 2026: Yoshiwara in Flames (2026), Alice in Wonderland –Dive in Wonderland– (2025), Detective Conan: One-Eyed Flashback (2025), Ranma1/2 (2024), Detective Conan: The Million-Dollar Pentagram (2024), Detective Conan vs. Kid the Phantom Thief (2024), One Piece Film Red (2022). The recorded credits span 2015 to 2026, including 21 movies and 9 TV shows. The filmography below lists available titles, release years and known roles. This profile is updated as additional verified information becomes available.