Acting credits
355
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
3.6
Moderate attention
TMDB internal trend index. Higher usually means more searches and page activity now.
Movies: 200Series: 155
TMDB ID: 68472
IMDb ID: nm0945322
Known for: Acting
Born: May 23, 1965
Age: 60
Place of birth: Fukuoka, Fukuoka, Japan
Gender: Male
Adult content flag: No
Career span: 1986 - 2026
Years active: 41
Average TMDB rating: 7.31
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.
Gintama: Yoshiwara in Flames
as Inorin (voice)
2026 Movie
名探偵コナン エピソード“ ZERO” 工藤新一水族館事件
as Shinichi Kudo (voice)
2026 Movie
Detective Conan: The Truth of 17 Years Ago
as Shinichi Kudo (voice)
2025 Movie
7.7
Alice in Wonderland –Dive in Wonderland–
as The White Rabit (voice)
2025 Movie
Stage Play 「Spooky Kitaro」
2025 Movie
7.4
Detective Conan: One-Eyed Flashback
as Shinichi Kudo (voice)
2025 Movie
Unification of Japan Gaiden: Yamazaki Family — Joji and His Merry Friends
2024 Movie
6.8
Detective Conan: The Million-Dollar Pentagram
as Kaito Kid / Shinichi Kudou (voice)
2024 Movie
6.0
Detective Conan vs. Kid the Phantom Thief
as Kaito Kuroba / Kaito Kid (voice)
2024 Movie
7.0
Detective Conan: Black Iron Submarine
as Shinichi Kudou (voice)
2023 Movie
6.6
Detective Conan: The Story of Ai Haibara: Black Iron Mystery Train
as Kaito Kuroba (voice)
2023 Movie
7.2
One Piece Film Red
as Usopp (voice)
2022 Movie
6.4
Detective Conan: The Bride of Halloween
as Shinichi Kudo (voice)
2022 Movie
7.4
One Piece - En route vers l'épisode 1000
as Comédien de doublage de Usopp – Japon
2021 Movie
6.4
Detective Conan: The Scarlet Bullet
as Shinichi Kudo (voice)
2021 Movie
6.0
Detective Conan: The Scarlet School Trip
as Shinichi Kudo (voice)
2019 Movie
7.3
One Piece: Episode of Skypiea
as Usopp (voice)
2019 Movie
9.0
Super Sentai Strongest Battle Director's Cut
as ToQger Arsenal (voice)
2019 Movie
8.5
Chibi Maruko-chan
as Kenichi Oono (voice)
2019 Movie
6.2
Case Closed: The Fist of Blue Sapphire
as Shinichi Kudo / Kaito Kuroba (voice)
2019 Movie
7.8
One Piece: Stampede
as Usopp (voice)
2019 Movie
6.1
Peacemaker Kurogane: Belief
as Shinpachi Nagakura (voice)
2018 Movie
6.2
Case Closed: Zero the Enforcer
as Shinichi Kudo / Kaito Kid (voice)
2018 Movie
Engimon
2018 Movie
Series
Series
Series credits linked with Kappei Yamaguchi.
8.3
Mechanical Marie
as Carl Ojisan (voice) • 12 eps
2025 Series
SPECIAL EDITED VERSION 『ONE PIECE』 魚人島編
as Usopp (voice) • 21 eps
2024 Series
8.2
Ranma1/2
as Ranma Saotome (voice) • 24 eps
2024 Series
7.2
Mecha-Ude: Mechanical Arms
as Yakumo (voice) • 12 eps
2024 Series
6.9
Train to the End of the World
as Shizuru's father (voice) • 1 eps
2024 Series
8.2
Bakuage Sentai Boonboomger
as Ticket (voice) • 1 eps
2024 Series
7.5
BUCCHIGIRI?!
as Komao (voice) • 12 eps
2024 Series
6.9
Urusei Yatsura
as Saizo (voice) • 1 eps
2022 Series
6.3
Miss Shachiku and the Little Baby Ghost
as "Cute" Voiceover of the Week (voice) • 1 eps
2022 Series
5.6
Estab-Life: Great Escape
as Mikhail (voice) • 12 eps
2022 Series
7.8
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
8.3
ODDTAXI
as Eiji Kakihana (voice) • 13 eps
2021 Series
10.0
航海王：和之国总集篇
as 配音 • 18 eps
2021 Series
6.3
The Gymnastics Samurai
as Bigbird Aragaki (voice) • 11 eps
2020 Series
8.6
JUJUTSU KAISEN
as Kechizu (voice) • 4 eps
2020 Series
8.3
Yashahime: Princess Half-Demon
as Inuyasha (voice) • 15 eps
2020 Series
7.5
BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense.
as Shin (voice) • 24 eps
2020 Series
8.5
Vinland Saga
as Jabbathe (voice) • 1 eps
2019 Series
6.8
Super Sentai Strongest Battle!!
as ToQger Arsenal (voice) • 4 eps
2019 Series
7.2
RADIANT
as Master Lord Majesty (voice) • 21 eps
2018 Series
7.6
Super Dragon Ball Heroes
as Fu (voice) • 54 eps
2018 Series
7.2
GeGeGe no Kitaro
as Ittan Momen • 97 eps
2018 Series
8.4
The Ancient Magus' Bride
as Oberon (voice) • 4 eps
2017 Series