Kappei Yamaguchi
Known for
Kappei Yamaguchi is a Japanese voice actor born in Fukuoka, best known for voicing Usopp in the long-running 'One Piece' and the enigmatic detective L in 'Death Note'. His career spans decades of major anime franchises, including Tombo in 'Kiki's Delivery Service' and Feitan in 'Hunter x Hunter'. He has also lent his distinctive voice to 'JUJUTSU KAISEN' and 'Super Dragon Ball Heroes'. He remains one of the most recognizable and prolific voice actors working in anime today.
Kappei Yamaguchi
138 Movies
140 Series
Kappei Yamaguchi is a Japanese voice actor born in Fukuoka, best known for voicing Usopp in the long-running 'One Piece' and the enigmatic detective L in 'Death Note'. His career spans decades of major anime franchises, including Tombo in 'Kiki's Delivery Service' and Feitan in 'Hunter x Hunter'. He has also lent his distinctive voice to 'JUJUTSU KAISEN' and 'Super Dragon Ball Heroes'. He remains one of the most recognizable and prolific voice actors working in anime today.
Movies
Plays Tombo (voice)
Kiki's Delivery Service
1989
Plays Usopp (voice)
One Piece Film Red
2022
Plays Inorin (voice)
Gintama the Movie 2026: Yoshiwara in Flames
2026
Plays Futoshi (voice)
Assassination Classroom the Movie: Our Time
2026
Plays Usopp (voice)
One Piece Film: Z
2012
Plays Usopp (voice)
One Piece Film: Strong World
2010
Plays Teenage Jiromaru (voice)
The Boy and the Beast
2015
Plays Mucha (voice)
Mazinger Z: Infinity
2017
Plays Usopp (voice)
One Piece: Baron Omatsuri and the Secret Island
2005
Plays Usopp (voice)
One Piece: Curse of the Sacred Sword
2004
Plays Shinichi Kudo (voice)
Case Closed: Countdown to Heaven
2001
Plays Usopp (voice)
One Piece Film: GOLD
2016
Plays Shinichi Kudo (voice)
Case Closed: The Crimson Love Letter
2017
Plays Usopp (voice)
One Piece: Clockwork Island Adventure
2001
Plays Usopp (voice)
One Piece Episode of East Blue
2017
Plays Shinichi Kudo (voice)
Case Closed: The Fourteenth Target
1998
Plays Usopp (voice)
One Piece: Episode of Skypiea
2018
Plays Usopp (voice)
One Piece: The Movie
2000
Plays Usopp (voice)
One Piece "3D2Y": Overcome Ace's Death! Luffy's Vow to his Friends
2014
Plays Usopp (voice)
One Piece: Dead End Adventure
2003
Plays Inuyasha (voice)
Inuyasha the Movie: Affections Touching Across Time
2001
Plays Usopp (voice)
One Piece: Jango's Dance Carnival
2001
Plays Usopp (voice)
One Piece: Giant Mecha Soldier of Karakuri Castle
2006
Plays Ranma Saotome ♂ (voice)
Ranma 1/2: Team Ranma vs. the Legendary Phoenix
1994
Plays Yūgo (voice)
Battle Angel
1993
Plays ToQger equipment (voice)
Zyuden Sentai Kyoryuger vs. Go-Busters: The Great Dinosaur War
2014
Plays Usopp / Lashes (voice)
One Piece: The Desert Princess and the Pirates: Adventure in Alabasta
2007
Plays Usopp (voice)
One Piece: Chopper's Kingdom in the Strange Animal Island
2002
Plays Fûta (voice)
Animal Crossing: The Movie
2006
Plays Fujino (voice)
Atashin'chi: The 3D Movie
2010
Plays Inuyasha (voice)
Inuyasha the Movie 3: Swords of an Honorable Ruler
2003
Plays Usopp (voice)
One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom
2008
Plays Usopp (voice)
One Piece: Heart of Gold
2016
Plays Usopp (voice)
One Piece Mugiwara Chase
2011
Plays Hiroaki Kusano (voice)
Nineteen 19
1990
Plays Usopp (voice)
One Piece: Dream Soccer King!
2002
Plays Shesta (voice)
Escaflowne: The Movie
2000
Plays Ranma Saotome ♂ (voice)
Ranma 1/2 the Movie 2: Nihao My Concubine
1992
Plays Inuyasha (voice)
Inuyasha the Movie 2: The Castle Beyond the Looking Glass
2002
Plays Inuyasha (voice)
Inuyasha the Movie 4: Fire on the Mystic Island
2004
Plays Johnny (voice)
A Wind Named Amnesia
1990
Plays Ranma Saotome ♂ (voice)
Ranma 1/2 the Movie: Big Trouble in Nekonron, China
1991
Plays Yasuharu Musashino
Samurai X: The Motion Picture
1997
Plays Ticket (voice)
Ressha Sentai ToQger vs. Kyoryuger: The Movie
2015
Plays Zesta (voice)
The Adventures of Tyrano Boy
2015
Plays Daitokuji (voice)
Yu-Gi-Oh! Bonds Beyond Time
2010
Plays Young Munchausen II (voice)
Urotsukidōji II: Legend of the Demon Womb
1991
Plays Eiji Kakihana (voice)
ODDTAXI in the Woods
2022
Plays Usopp (voice)
One Piece: Glorious Island
2012
Plays Feitan (voice)
Hunter x Hunter: Phantom Rouge
2013
TV Shows
Plays Usopp (voice)
One Piece
1999
Plays Garizo (voice)
HANAKAPPA
2010
Plays Fujino (voice)
Atashin'chi
2002
Plays InuYasha (voice)
InuYasha
2000
Plays Professor Daitokuji / Lyman Banner (voice)
Yu-Gi-Oh! GX
2004
Plays Ranma Saotome ♂ (voice)
Ranma ½
1989
Plays Raimon Tarou
Eyeshield 21
2005
Plays Ken Kurenai
Red Baron
1994
Plays Ittan Momen
GeGeGe no Kitaro
2018
Plays カナビー
Yat, The Space Patrol
1996
Plays Jii-chan (voice)
Space Academy
2021
Plays Kijimuna
Stitch!
2008
Plays Yattarou
Samurai Pizza Cats
1990
Plays Fu (voice)
Super Dragon Ball Heroes
2018
Plays Goku (voice)
Monkey Typhoon
2002
Plays Kiwami Juurouta
Shippuu! Iron Leaguer
1993
Plays Toto (voice)
Free Kick Toward Tomorrow
1992
Plays Hugh (voice)
Kiba
2006
Plays Takuro Amano
Wedding Peach
1995
Plays Yuuya Noda (voice)
Miracle Girls
1993
Plays Zenki (voice)
Zenki
1995
Plays Hikari Yumenokōji (voice)
Genji Tsuushin Agedama
1991
Plays Tororo
Sgt. Frog
2004
Plays Tsutomu Yamaguchi (Voice)
Neighborhood Story
1995
Plays Etekichi
Jungle King Taa-chan
1993
Plays Artemis (voice)
Pretty Guardian Sailor Moon
2003
Plays Flappy (voice)
PreCure Splash Star
2006
Plays Sai Saici (voice)
Mobile Fighter G Gundam
1994
Plays Ticket (voice)
Ressha Sentai ToQger
2014
Plays Ryou Ishizaki (voice)
Captain Tsubasa J
1994
Latest Trailers
Watch Trailer
Alice in Wonderland –Dive in Wonderland–
Full Filmography
A Lazy Day in Thousand Sunny
Usopp
2026
Film
Assassination Classroom the Movie: Our Time
Futoshi (voice)
2026
Film
Gintama the Movie 2026: Yoshiwara in Flames
Inorin (voice)
2026
Film
BEAT RUNNERS
Vivace (voice) · 11 episodes
2026–
TV
Mechanical Marie
Carl Ojisan (voice) · 12 episodes
2025–
TV
Alice in Wonderland –Dive in Wonderland–
The White Rabit (voice)
2025
Film
One Piece Log: Fish-Man Island Saga
Usopp · 21 episodes
2024–
TV
One Piece Fan Letter
Usopp
2024
Film
Ranma1/2
Ranma Saotome (voice) · 36 episodes
2024–
TV
Photos
Frequently Asked Questions
How old is Kappei Yamaguchi and where are they from?
Kappei Yamaguchi is 61 years old, born on May 23, 1965 in Fukuoka, Fukuoka, Japan.
What are the most famous roles of Kappei Yamaguchi?
Kappei Yamaguchi is best known for roles in Kiki's Delivery Service, The Boy and the Beast, One Piece Film Red.
How many movies has Kappei Yamaguchi been in?
Over a 37-year career (since 1989), Kappei Yamaguchi has appeared in 138 movies and 140 TV shows.
What was Kappei Yamaguchi's first movie?
The career of Kappei Yamaguchi began with Kiki's Delivery Service (1989).
What is Kappei Yamaguchi's most recent movie or series?
Kappei Yamaguchi's most recent release is Detective Conan: The Counterfeit Case of Ultra 30, which premiered on October 2, 2026.
What TV shows has Kappei Yamaguchi appeared in?
On television, Kappei Yamaguchi has appeared in One Piece, Death Note, JUJUTSU KAISEN, Super Dragon Ball Heroes.
Kappei Yamaguchi
1965-05-23 · Fukuoka, Fukuoka, Japan
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.Kappei Yamaguchi, licensed under CC-BY-SA, full list of contributors on Wikipedia.