Acting credits
372
Prolific
Very extensive acting filmography.
Actor
Kappei Yamaguchi
Acting
Career Snapshot
ExplainedThese indicators come from TMDB. They are relative signals, not review ratings.
TMDB popularity
3.1
Moderate attention
TMDB internal trend index. Higher usually means more searches and page activity now.
Movies: 210Series: 162
TMDB ID: 68472
IMDb ID: nm0945322
Known for: Acting
Born: May 23, 1965
Age: 61
Place of birth: Fukuoka, Fukuoka, Japan
Gender: Male
Adult content flag: No
Career span: 1986 - 2026
Years active: 41
Average TMDB rating: 7.3
Wikidata: Q355173
Also known as
Mitsuo Yamaguchi • Kinoshita Toukichirou • Ushiku Kyouya • Yamaguchi Kappei • Yamaguchi Mitsuo • 木下 桃吉郎 • 牛久 京也 • 山口 勝平 • 山口 光雄 • کاپِی یاماگوچی
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, 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.
Photos
Movies
Movies
Movie credits linked with Kappei Yamaguchi.
Detective Conan: The Counterfeit Case of Ultra 30
as Shinichi Kudo (voice)
2026 Movie
Assassination Classroom the Movie: Our Time
as Futoshi (voice)
2026 Movie
Gintama the Movie 2026: Yoshiwara in Flames
as Inorin (voice)
2026 Movie
Detective Conan: The 17-Year-Old Truth
as Shinichi Kudo (voice)
2025 Movie
Alice in Wonderland –Dive in Wonderland–
as The White Rabit (voice)
2025 Movie
Stage Play 「Spooky Kitaro」
2025 Movie
Detective Conan: One-Eyed Flashback
as Shinichi Kudo (voice)
2025 Movie
One Piece Fan Letter
as Usopp
2024 Movie
Unification of Japan Gaiden: Yamazaki Family — Joji and His Merry Friends
2024 Movie
Detective Conan: The Million-Dollar Pentagram
as Kaito Kid / Shinichi Kudou (voice)
2024 Movie
Detective Conan vs. Kid the Phantom Thief
as Kaito Kuroba / Kaito Kid (voice)
2024 Movie
Detective Conan: Black Iron Submarine
as Shinichi Kudou (voice)
2023 Movie
Detective Conan: The Story of Ai Haibara: Black Iron Mystery Train
as Kaito Kuroba (voice)
2023 Movie
One Piece Film Red
as Usopp (voice)
2022 Movie
Detective Conan: The Bride of Halloween
as Shinichi Kudo (voice)
2022 Movie
ODDTAXI in the Woods
as Eiji Kakihana (voice)
2022 Movie
One Piece - En route vers l'épisode 1000
as Comédien de doublage de Usopp – Japon
2021 Movie
Detective Conan: The Scarlet Bullet
as Shinichi Kudo (voice)
2021 Movie
Detective Conan: The Scarlet School Trip
as Shinichi Kudo (voice)
2019 Movie
Super Sentai Strongest Battle Director's Cut
as ToQger Arsenal (voice)
2019 Movie
Case Closed: The Fist of Blue Sapphire
as Shinichi Kudo / Kaito Kuroba (voice)
2019 Movie
One Piece: Stampede
as Usopp (voice)
2019 Movie
Planetarium HANAKAPPA: Bloom! Pop! Space Travel
as Garizo (voice)
2018 Movie
One Piece: Episode of Skypiea
as Usopp (voice)
2018 Movie
Series
Series
Series credits linked with Kappei Yamaguchi.
BEAT RUNNERS
as Vivace (voice) • 11 eps
2026 Series
Mechanical Marie
as Carl Ojisan (voice) • 12 eps
2025 Series
One Piece Log: Fish-Man Island Saga
as Usopp • 21 eps
2024 Series
Ranma1/2
as Ranma Saotome (voice) • 25 eps
2024 Series
Mecha-Ude: Mechanical Arms
as Yakumo (voice) • 12 eps
2024 Series
Train to the End of the World
as Shizuru's father (voice) • 1 eps
2024 Series
Bakuage Sentai Boonboomger
as Ticket (voice) • 1 eps
2024 Series
BUCCHIGIRI?!
as Komao (voice) • 12 eps
2024 Series
The Incident
3 eps
2023 Series
Urusei Yatsura
as Saizo (voice) • 1 eps
2022 Series
Miss Shachiku and the Little Baby Ghost
as "Cute" Voiceover of the Week (voice) • 1 eps
2022 Series
Estab-Life: Great Escape
as Mikhail (voice) • 12 eps
2022 Series
The Ancient Magus' Bride: The Boy from the West and the Knight of the Blue Storm
as Oberon (voice) • 3 eps
2021 Series
Space Academy
as Jii-chan (voice) • 64 eps
2021 Series
ODDTAXI
as Eiji Kakihana (voice) • 13 eps
2021 Series
航海王：和之国总集篇
as 配音 • 18 eps
2021 Series
The Gymnastics Samurai
as Bigbird Aragaki (voice) • 11 eps
2020 Series
JUJUTSU KAISEN
as Kechizu (voice) • 4 eps
2020 Series
Yashahime: Princess Half-Demon
as Inuyasha (voice) • 15 eps
2020 Series
BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense.
as Shin (voice) • 24 eps
2020 Series
Vinland Saga
as Jabbathe (voice) • 1 eps
2019 Series
4 Week Continuous Special Super Sentai Strongest Battle!!
as ToQger Arsenal (voice) • 4 eps
2019 Series
RADIANT
as Master Lord Majesty (voice) • 21 eps
2018 Series
Super Dragon Ball Heroes
as Fu (voice) • 54 eps
2018 Series