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
機械じかけのマリー
Mechanical Marie
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）
Case Closed: The Million-Dollar Pentagram
名探偵コナン 100万ドルの五稜星（みちしるべ）
Case Closed: 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
機械じかけのマリー
Mechanical Marie
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）
Case Closed: The Million-Dollar Pentagram
名探偵コナン 100万ドルの五稜星（みちしるべ）
Case Closed: The Million-Dollar Pentagram
Filmography
- Assassination Classroom the Movie: Our Time 7.1 147 Film
- Gintama the Movie 2026: Yoshiwara in Flames 8.0 115 Film
- Mechanical Marie 8.0 1.3K TV
- Ranma1/2 8.3 3.6K TV
- Case Closed: The Million-Dollar Pentagram 6.8 544 Film
- Case Closed: The Million-Dollar Pentagram 6.8 544 Film
- Detective Conan: Black Iron Submarine 6.8 504 Film
- One Piece Film Red 7.2 623 Film
- Detective Conan: The Bride of Halloween 6.5 556 Film
- Detective Conan: The Scarlet Bullet 6.5 472 Film
- One Piece: Episode of Skypiea 7.0 458 Film
- Super Dragon Ball Heroes 7.6 5.5K TV
- GeGeGe no Kitaro 7.2 2.2K TV
- Case Closed: The Crimson Love Letter 6.6 459 Film
- Detective Conan: Episode One - The Great Detective Turned Small 7.6 434 Film
- One Piece Film: GOLD 7.2 634 Film
- Detective Conan: The Darkest Nightmare 6.9 434 Film
- One Piece: Adventure of Nebulandia 7.7 565 Film
- Detective Conan: Sunflowers of Inferno 6.1 394 Film
- Detective Conan: Dimensional Sniper 6.9 501 Film
- Lupin the Third vs. Detective Conan: The Movie 6.9 454 Film
- Detective Conan: Private Eye in the Distant Sea 6.7 652 Film
- One Piece Film: Z 7.5 448 Film
- Detective Conan: The Eleventh Striker 6.9 467 Film
- Detective Conan: Quarter of Silence 7.0 464 Film
- One Piece 3D: Straw Hat Chase 6.8 441 Film
- Detective Conan: The Lost Ship in the Sky 7.1 448 Film
- One Piece Film: Strong World 7.5 469 Film
- Detective Conan: The Raven Chaser 7.3 462 Film
- Ranma ½: Nightmare! Incense of Spring Sleep 7.0 403 Film
- Detective Conan: Full Score of Fear 7.0 470 Film
- One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom 7.1 404 Film
- Death Note Relight 1: Visions of a God 8.1 569 Film
- Detective Conan: Jolly Roger in the Deep Azure 6.6 380 Film
- Death Note 8.6 7.5K TV
- Detective Conan: The Private Eyes' Requiem 7.1 380 Film
- One Piece: Giant Mecha Soldier of Karakuri Castle 7.1 420 Film
- Detective Conan: Strategy Above the Depths 6.9 564 Film
- One Piece: Baron Omatsuri and the Secret Island 7.3 495 Film
- Inuyasha the Movie 4: Fire on the Mystic Island 7.5 381 Film
- Detective Conan: Magician of the Silver Sky 7.0 405 Film
- One Piece: Curse of the Sacred Sword 7.0 391 Film
- Inuyasha the Movie 3: Swords of an Honorable Ruler 7.7 395 Film
- Detective Conan: Crossroad in the Ancient Capital 7.1 474 Film
- One Piece: Dead End Adventure 7.1 420 Film
- Inuyasha the Movie 2: The Castle Beyond the Looking Glass 7.6 418 Film
- Detective Conan: The Phantom of Baker Street 7.7 397 Film
- One Piece: Chopper's Kingdom on the Island of Strange Animals 6.8 439 Film
- Inuyasha the Movie: Affections Touching Across Time 7.6 417 Film
- Case Closed: Countdown to Heaven 7.4 423 Film
- One Piece: Clockwork Island Adventure 7.0 440 Film
- InuYasha 8.6 35K TV
- Detective Conan: Captured in Her Eyes 7.4 482 Film
- One Piece: The Movie 7.1 558 Film
- One Piece 8.7 153K TV
- Detective Conan: The Last Wizard of the Century 7.3 452 Film
- Case Closed: The Fourteenth Target 7.2 461 Film
- Case Closed: The Time Bombed Skyscraper 7.4 449 Film
- Case Closed 8.0 31K TV
- Ranma ½: The Movie 3 — The Super Non-Discriminatory Showdown: Team Ranma vs. the Legendary Phoenix 7.7 390 Film
- Battle Angel 6.8 465 Film
- Delinquent in Drag 4.0 499 Film
- Ranma ½: The Movie 2 — The Battle of Togenkyo: Rescue the Brides! 8.1 423 Film
- La Blue Girl 7.0 3K TV
- Ranma ½: The Movie — The Battle of Nekonron: The Fight to Break the Rules! 7.3 379 Film
- Kiki's Delivery Service 7.8 490 Film
- Ranma ½ 8.6 32K TV
