Kappei Yamaguchi
Biography
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...
Most Popular
劇場版「暗殺教室」みんなの時間
Assassination Classroom the Movie: Our Time
新劇場版 銀魂 -吉原大炎上-
Gintama the Movie 2026: Yoshiwara in Flames
不思議の国でアリスと –Dive in Wonderland–
Alice in Wonderland –Dive in Wonderland–
名探偵コナン 隻眼の残像
Detective Conan: One-Eyed Flashback
らんま1/2
Ranma1/2
名探偵コナン 100万ドルの五稜星（みちしるべ）
Detective Conan: The Million-Dollar Pentagram
Latest Releases
劇場版「暗殺教室」みんなの時間
Assassination Classroom the Movie: Our Time
新劇場版 銀魂 -吉原大炎上-
Gintama the Movie 2026: Yoshiwara in Flames
不思議の国でアリスと –Dive in Wonderland–
Alice in Wonderland –Dive in Wonderland–
名探偵コナン 隻眼の残像
Detective Conan: One-Eyed Flashback
らんま1/2
Ranma1/2
名探偵コナン 100万ドルの五稜星（みちしるべ）
Detective Conan: The Million-Dollar Pentagram
Filmography
- Assassination Classroom the Movie: Our Time 7.7 14 Film
- Gintama the Movie 2026: Yoshiwara in Flames 9.0 9 Film
- Alice in Wonderland –Dive in Wonderland– 7.7 12 Film
- Detective Conan: One-Eyed Flashback 7.2 10 Film
- Ranma1/2 8.1 47 TV
- Detective Conan: The Million-Dollar Pentagram 6.9 13 Film
- Detective Conan: Black Iron Submarine 7.0 3 Film
- One Piece Film Red 7.2 8 Film
- Detective Conan: The Scarlet Bullet 6.5 8 Film
- The Gymnastics Samurai 6.3 83 TV
- BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense. 7.5 27 TV
- Super Dragon Ball Heroes 7.6 144 TV
- Mazinger Z: Infinity 7.0 8 Film
- Case Closed: The Crimson Love Letter 6.5 13 Film
- One Piece Film: GOLD 7.2 5 Film
- The Boy and the Beast 7.9 6 Film
- Detective Conan: Sunflowers of Inferno 6.2 7 Film
- Detective Conan: Dimensional Sniper 6.8 8 Film
- Lupin the Third vs. Detective Conan: The Movie 6.9 9 Film
- Detective Conan: Private Eye in the Distant Sea 6.6 8 Film
- One Piece Film: Z 7.5 6 Film
- Detective Conan: Quarter of Silence 7.1 9 Film
- One Piece Mugiwara Chase 6.7 11 Film
- HANAKAPPA 6.0 1.1K TV
- Detective Conan: The Raven Chaser 7.3 7 Film
- Lupin the Third vs. Detective Conan 6.9 8 Film
- Detective Conan: Full Score of Fear 6.9 9 Film
- One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom 7.0 12 Film
- Death Note Relight 1: Visions of a God 7.9 13 Film
- Detective Conan: Jolly Roger in the Deep Azure 6.5 7 Film
- One Piece: The Desert Princess and the Pirates: Adventure in Alabasta 6.9 12 Film
- Death Note 8.6 250 TV
- Detective Conan: The Private Eyes' Requiem 7.1 12 Film
- One Piece: Giant Mecha Soldier of Karakuri Castle 6.9 7 Film
- Detective Conan: Strategy Above the Depths 6.9 12 Film
- One Piece: Baron Omatsuri and the Secret Island 7.2 10 Film
- Inuyasha the Movie 4: Fire on the Mystic Island 7.6 8 Film
- Detective Conan: Magician of the Silver Sky 7.0 10 Film
- One Piece: Curse of the Sacred Sword 6.9 8 Film
- Detective Conan: Crossroad in the Ancient Capital 7.1 9 Film
- One Piece: Dead End Adventure 7.0 6 Film
- Detective Conan: The Phantom of Baker Street 7.8 7 Film
- Case Closed: Countdown to Heaven 7.4 14 Film
- InuYasha 8.6 1 TV
- Escaflowne: The Movie 6.6 8 Film
- Detective Conan: Captured in Her Eyes 7.4 8 Film
- One Piece: The Movie 7.1 6 Film
- One Piece 8.8 4.5K TV
- Case Closed: The Fourteenth Target 7.2 8 Film
- Detective Conan: The Time Bombed Skyscraper 7.4 10 Film
- Detective Conan 8.0 18 TV
- Nadia: The Secret of Blue Water 7.4 41 TV
- Kiki's Delivery Service 7.8 9 Film
- Ranma ½ 8.6 TV
