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Kappei Yamaguchi

Kappei Yamaguchi

Known For Acting
Birthday May 23, 1965 (60)
Birthplace Fukuoka, Fukuoka Prefecture, Japan
Popularity 2 (history)
Updated Jul 24, 2025
Entry Date Apr 26, 2024
Links TMDb IMDb
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 Girl ... s), 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. Description above from the Wikipedia article Kappei Yamaguchi, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Known For

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Filmography

Detective Conan: One-Eyed Flashback

Detective Conan: One-Eyed Flashback

2025

as Shinichi Kudo (voice)

Alice in Wonderland –Dive in Wonderland–

Alice in Wonderland –Dive in Wonderland–

2025

as The White Rabit (voice)

Case Closed: The Million-Dollar Pentagram

Case Closed: The Million-Dollar Pentagram

2024

as Kaito Kid / Shinichi Kudou (voice)

Case Closed: The Million-Dollar Pentagram

Case Closed: The Million-Dollar Pentagram

2024

as Shinichi Kudo / Kid the Phantom Thief / Kaito Kuroba (voice)

Detective Conan: Black Iron Submarine

Detective Conan: Black Iron Submarine

2023

as Shinichi Kudou (voice)

One Piece Film Red

One Piece Film Red

2022

as Usopp (voice)

Case Closed: The Crimson Love Letter

Case Closed: The Crimson Love Letter

2017

as Shinichi Kudo (voice)

Lupin the Third vs. Detective Conan

Lupin the Third vs. Detective Conan

2009

as Shinichi Kudo (voice)

Detective Conan: Strategy Above the Depths

Detective Conan: Strategy Above the Depths

2005

as Shinichi Kudou (voice)

Shadow Skill: The Movie

Shadow Skill: The Movie

1996

as Scrib Lowengren

Madara

Madara

1991

as (voice)

Kiki's Delivery Service

Kiki's Delivery Service

1989

as Tombo (voice)

No data available

No data available

No data available

Organization Category Movie
Television Credits

Case Closed

as Shinichi Kudo (voice)

Episodes: 1156

First Aired: Jan 08, 1996

One Piece

as Usopp (voice)

Episodes: 1123

First Aired: Oct 20, 1999

My Family

as Fujino (voice)

Episodes: 663

First Aired: Apr 19, 2002

InuYasha

as InuYasha (voice)

Episodes: 193

First Aired: Oct 16, 2000

Yu-Gi-Oh! GX

as Professor Daitokuji / Lyman Banner (voice)

Episodes: 180

First Aired: Oct 06, 2004

Ranma ½

as Ranma Saotome ♂ (voice)

Episodes: 161

First Aired: Apr 15, 1989

Eyeshield 21

as Raimon Tarou

Episodes: 145

First Aired: Apr 06, 2005

GeGeGe no Kitaro

as Ittan Momen

Episodes: 97

First Aired: Apr 01, 2018

Yat, The Space Patrol

as カナビー

Episodes: 75

First Aired: Oct 05, 1996

Space Academy

as Jii-chan (voice)

Episodes: 64

First Aired: Apr 07, 2021

Stitch!

as Kijimuna

Episodes: 56

First Aired: Oct 08, 2008

Samurai Pizza Cats

as Yattarou

Episodes: 54

First Aired: Feb 01, 1990

Super Dragon Ball Heroes

as Fu (voice)

Episodes: 54

First Aired: Jul 01, 2018

Galaxy Warring State Chronicle Rai

as (voice)

Episodes: 52

First Aired: Apr 08, 1994

Shippuu! Iron Leaguer

as Kiwami Juurouta

Episodes: 52

First Aired: Apr 06, 1993

Free Kick Toward Tomorrow

as Toto

Episodes: 52

First Aired: Apr 14, 1992

Monkey Typhoon

as Goku (voice)

Episodes: 52

First Aired: Oct 01, 2002

Kiba

as Hugh (voice)

Episodes: 51

First Aired: Apr 02, 2006

Wedding Peach

as Takuro Amano

Episodes: 51

First Aired: Apr 05, 1995

Miracle Girls

as Yuuya Noda

Episodes: 51

First Aired: Jan 08, 1993

Zenki

as Zenki (voice)

Episodes: 51

First Aired: Jan 09, 1995

Genji Tsuushin Agedama

as Hikari Yumenokōji (voice)

Episodes: 51

First Aired: Oct 04, 1991

Sgt. Frog

as Tororo

Episodes: 51

First Aired: Apr 03, 2004

Neighborhood Story

as Tsutomu Yamaguchi (Voice)

Episodes: 50

First Aired: Sep 10, 1995

Jungle King Taa-chan

as Etekichi

Episodes: 50

First Aired: Oct 14, 1993

Red Baron

as Ken Kurenai

Episodes: 49

First Aired: Apr 05, 1994

Red Baron

as Fake Ken

Episodes: 49

First Aired: Apr 05, 1994

Pretty Guardian Sailor Moon

as Artemis (voice)

Episodes: 49

First Aired: Oct 04, 2003

PreCure Splash Star

as Flappy (voice)

Episodes: 49

First Aired: Feb 05, 2006

Mobile Fighter G Gundam

as Sai Saici (voice)

Episodes: 49

First Aired: Apr 22, 1994

Ressha Sentai ToQger

as Ticket (voice)

Episodes: 47

First Aired: Feb 16, 2014

Captain Tsubasa J

as Ryou Ishizaki (voice)

Episodes: 47

First Aired: Oct 21, 1994

The Twelve Kingdoms

as Rokuta (voice)

Episodes: 45

First Aired: Apr 09, 2002

Kamikaze Kaitou Jeanne

as Noin Claude

Episodes: 44

First Aired: Feb 13, 1999

Flint: The Time Detective

as Kyoichiro Narugami

Episodes: 39

First Aired: Oct 01, 1998

Nadia: The Secret of Blue Water

as Hamahama (voice)

Episodes: 39

First Aired: Apr 13, 1990

Revolutionary Girl Utena

as Shiori's boyfriend (voice)

Episodes: 39

First Aired: Apr 02, 1997

Death Note

as L (voice)

Episodes: 37

First Aired: Oct 04, 2006

Gigant Big-Shot Tsukasa

as Tsukasa Mendō (voice)

Episodes: 32

First Aired: Apr 01, 2014

Fancy Lala

as Taro Yoshida

Episodes: 26

First Aired: Apr 05, 1998

Pecola

as Bashatt

Episodes: 26

First Aired: Apr 21, 2003

CLAMP School Detectives

as (voice)

Episodes: 26

First Aired: May 03, 1997

Cyber Team in Akihabara

as Crane Bahnsteik (voice)

Episodes: 26

First Aired: Apr 04, 1998

Betterman

as Keita Aono (voice)

Episodes: 26

First Aired: Apr 02, 1999

Neo Angelique Abyss

as Rune

Episodes: 26

First Aired: Apr 06, 2008

Papuwa

as Chappy

Episodes: 26

First Aired: Sep 30, 2003

Papuwa

as Dr. Gunma

Episodes: 26

First Aired: Sep 30, 2003

Eden's Bowy

as Jorrne

Episodes: 26

First Aired: Apr 06, 1999

Sore Ike! Zukkoke Sannin-gumi

as Hachibee

Episodes: 26

First Aired: Apr 04, 2004

Shadow Skill

as Low (voice)

Episodes: 26

First Aired: Jul 02, 1998

One Outs

as Satoshi Ideguchi (voice)

Episodes: 25

First Aired: Oct 07, 2008

B'T X

as Camilla (voice)

Episodes: 25

First Aired: Apr 06, 1996

Hanada Shounen-shi

as Haruhiko (voice)

Episodes: 25

First Aired: Oct 01, 2002

Persona4 the ANIMATION

as Teddie (voice)

Episodes: 25

First Aired: Oct 07, 2011

Rin-ne

as Sabato Rokudou

Episodes: 25

First Aired: Apr 04, 2015

Showa Genroku Rakugo Shinju

as Amaken (voice)

Episodes: 25

First Aired: Jan 09, 2016

Rizelmine

as Tomonori Iwaki

Episodes: 24

First Aired: Apr 02, 2002

Magic Kaito 1412

as Kaito Kuroba / Shinichi Kudo (voice)

Episodes: 24

First Aired: Oct 04, 2014

Peacemaker

as Shinpachi Nagakura (voice)

Episodes: 24

First Aired: Oct 07, 2003

BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense.

as Shin (voice)

Episodes: 24

First Aired: Jan 08, 2020

The Law of Ueki

as Hideyoshi Soya (voice)

Episodes: 21

First Aired: Apr 04, 2005

RADIANT

as Master Lord Majesty (voice)

Episodes: 21

First Aired: Oct 06, 2018

Doki Doki School Hours

as Kenta Suetake

Episodes: 20

First Aired: Apr 04, 2004

Android Kikaider

as Saburo Kazeda (voice)

Episodes: 17

First Aired: Oct 16, 2000

Yashahime: Princess Half-Demon

as Inuyasha (voice)

Episodes: 15

First Aired: Oct 03, 2020

ODDTAXI

as Eiji Kakihana (voice)

Episodes: 13

First Aired: Apr 06, 2021

Gravitation

as Ryuichi Sakuma (voice)

Episodes: 13

First Aired: Oct 04, 2000

Hunter x Hunter

as Feitan (voice)

Episodes: 13

First Aired: Oct 02, 2011

Hakkenden: Legend of the Dog Warriors

as Sosuke Inukawa (voice)

Episodes: 13

First Aired: Oct 25, 1990

Space Pirate Captain Herlock: Outside Legend - The Endless Odyssey

as Tochiro (voice)

Episodes: 13

First Aired: Dec 21, 2002

Record of Lodoss War

as Etoh (voice)

Episodes: 13

First Aired: Jun 30, 1990

DearS

as (voice)

Episodes: 12

First Aired: Jul 10, 2004

Majikoi - Oh! Samurai Girls

as Ikuro Fukumoto (voice)

Episodes: 12

First Aired: Oct 02, 2011

Persona 4 The Golden Animation

as Teddie (voice)

Episodes: 12

First Aired: Jul 11, 2014

Makeruna!! Aku no Gundan!

as Pepu (voice)

Episodes: 12

First Aired: Apr 05, 2017

BUCCHIGIRI?!

as Komao (voice)

Episodes: 12

First Aired: Jan 13, 2024

Magic Kaito: Kid the Phantom Thief

as Kaito Kuroba / Kaito Kid (voice)

Episodes: 12

First Aired: Apr 17, 2010

In Search of the Lost Future

as Osafune Kenny Eitarou

Episodes: 12

First Aired: Oct 04, 2014

Legend of the Dragon Kings

as Amaru Ryudou

Episodes: 12

First Aired: Jun 25, 1991

Ranma1/2

as Ranma Saotome (voice)

Episodes: 12

First Aired: Oct 06, 2024

Mecha-Ude: Mechanical Arms

as Yakumo (voice)

Episodes: 12

First Aired: Oct 04, 2024

Mouse

as Sorata Muon (voice)

Episodes: 12

First Aired: Jan 05, 2003

Ayakashi: Samurai Horror Tales

as Kaikaimaru (voice)

Episodes: 11

First Aired: Jan 13, 2006

Rampo Kitan: Game of Laplace

as Shitai-kun

Episodes: 11

First Aired: Jul 03, 2015

The Gymnastics Samurai

as Bigbird Aragaki (voice)

Episodes: 11

First Aired: Oct 11, 2020

One Piece Characters Log

as Usopp

Episodes: 9

First Aired: Jun 20, 2016

KO Century Beast Warriors

as Wan Dababatta

Episodes: 7

First Aired: May 02, 1992

Giant Robo: The Day the Earth Stood Still

as Daisaku Kusama

Episodes: 7

First Aired: Jul 23, 1992

Can Can Bunny Extra

as Kenta (voice)

Episodes: 6

First Aired: Jan 19, 1996

Devil Hunter Yohko

as Wakabayashi Osamu (voice)

Episodes: 6

First Aired: Dec 01, 1990

Here Is Greenwood

as Tenma Koizumi (voice)

Episodes: 6

First Aired: Nov 21, 1991

The Heroic Legend of Arslan: Age of Heroes

as Arslan (voice)

Episodes: 6

First Aired: Aug 17, 1991

Please Save My Earth

as Hirohiko Kazama (voice)

Episodes: 6

First Aired: Dec 17, 1993

Magi: Adventure of Sinbad (OVA)

as Valefor (voice)

Episodes: 5

First Aired: May 16, 2014

Slow Step

as Akiba Shuu

Episodes: 5

First Aired: Jun 01, 1991

Jujutsu Kaisen

as Kechizu (voice)

Episodes: 4

First Aired: Oct 03, 2020

JoJo's Bizarre Adventure

as Shigechi (voice)

Episodes: 4

First Aired: Oct 06, 2012

The Ancient Magus' Bride

as Oberon (voice)

Episodes: 4

First Aired: Oct 08, 2017

Jewel BEM Hunter Lime

as バース (voice)

Episodes: 3

First Aired: Oct 25, 1996

The Ancient Magus' Bride: The Boy from the West and the Knight of the Blue Storm

as Oberon (voice)

Episodes: 3

First Aired: Sep 10, 2021

Zetsuai-1989

as Katsumi Shibuya (voice)

Episodes: 3

First Aired: Jul 29, 1992

Urusei Yatsura

as Tsuyuo (voice)

Episodes: 3

First Aired: Oct 14, 2022

Baccano!

as Chic Jefferson (voice)

Episodes: 2

First Aired: Jul 27, 2007

Armored Dragon Legend Villgust

as Bostov (voice)

Episodes: 2

First Aired: Jan 21, 1993

Tokyo Babylon

as Subaru Sumeragi (voice)

Episodes: 2

First Aired: Oct 21, 1992

RG Veda

as Ryū-ō (voice)

Episodes: 2

First Aired: Jun 01, 1991

Ayane's High Kick

as Kappei Inagaki (voice)

Episodes: 2

First Aired: Jan 21, 1997

Battle Angel

as Yugo (voice)

Episodes: 2

First Aired: Jun 21, 1993

Mighty Space Miners

as Ushiwaka Nanbu (voice)

Episodes: 2

First Aired: Nov 11, 1994

Madara

as Madara (voice)

Episodes: 2

First Aired: Mar 20, 1991

Angel's Feather

as Hamura Shou (voice)

Episodes: 2

First Aired: Apr 28, 2006

Danganronpa: The Animation

as Hifumi Yamada (voice)

Episodes: 2

First Aired: Jul 05, 2013

Claymore

as Male 'Awakened' 3 (voice)

Episodes: 2

First Aired: Apr 03, 2007

Fire Emblem

as Julian (voice)

Episodes: 2

First Aired: Jan 26, 1996

The Cockpit

as Soldier Utsunomiya (voice)

Episodes: 1

First Aired: Oct 22, 1993

Cowboy Bebop

as Rhint (voice)

Episodes: 1

First Aired: Apr 03, 1998

Tokusou Sentai Dekaranger

as Thousanian Gineka (voice)

Episodes: 1

First Aired: Feb 15, 2004

Tensou Sentai Goseiger

as Ain-I of the Neutral (voice)

Episodes: 1

First Aired: Feb 14, 2010

Doubutsu Sentai Zyuohger

as Illusion (voice)

Episodes: 1

First Aired: Feb 14, 2016

Urusei Yatsura

as Saizo (voice)

Episodes: 1

First Aired: Oct 14, 2022

Pop Team Epic

as Popuko (voice)

Episodes: 1

First Aired: Jan 07, 2018

Urusei Yatsura

as B-Bo (voice)

Episodes: 1

First Aired: Oct 14, 2022

Hikonin Sentai Akibaranger

as Chief Clerk Blu-Ray (voice)

Episodes: 1

First Aired: Apr 06, 2012

Hikonin Sentai Akibaranger

as Chief Editor HVD (voice)

Episodes: 1

First Aired: Apr 06, 2012

Vinland Saga

as Jabbathe (voice)

Episodes: 1

First Aired: Jul 08, 2019

Bakuage Sentai Boonboomger

as Ticket (voice)

Episodes: 1

First Aired: Mar 03, 2024

Case Closed

as Jimmy Kudo

Episodes: 0

First Aired: Jan 08, 1996

Ranma ½

as Ranma Saotome

Episodes: 0

First Aired: Apr 15, 1989

Baby and Me

Episodes: 35

First Aired: Jul 11, 1996

Super Zugan

Episodes: 21

First Aired: Oct 09, 1992

Gun Frontier

Episodes: 13

First Aired: Mar 28, 2002

Ghastly Prince Enma Burning Up

Episodes: 12

First Aired: Apr 07, 2011

GinRei

Episodes: 3

First Aired: Feb 20, 1994

Our Home's Fox Deity

Episodes: 2

First Aired: Jul 27, 2012

Powerpuff Girls Z

Episodes: 1

First Aired: Jul 01, 2006

Valkyria Chronicles

Episodes: 1

First Aired: Apr 04, 2009

Step Up Love Story

Episodes: 1

First Aired: Jul 26, 2002

Sister Princess

Episodes: 1

First Aired: Apr 04, 2001

Lil' Red Riding Hood Cha-Cha

Episodes: 1

First Aired: Jan 07, 1994

Angelic Layer

Episodes: 1

First Aired: Apr 01, 2001

Popularity Metrics

Popularity History


Year Month Avg Max Min
2024 6 20 28 13
2024 7 33 55 16
2024 8 20 52 10
2024 9 20 42 6
2024 10 9 14 5
2024 11 11 21 6
2024 12 16 28 8
2025 1 21 46 12
2025 2 14 27 2
2025 3 6 24 1
2025 4 1 2 1
2025 5 3 4 1
2025 6 2 4 1
2025 7 1 2 1
2025 8 4 15 0
2025 9 1 2 0
2025 10 1 2 1

Trending Rank


Year Month Avg Rank Max Rank
2024 6 904 884
2025 1 642 566
2025 2 702 511
2025 7 105 64

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