Kappei Yamaguchi
Acting
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.
Description above from the Wikipedia article Kappei Yamaguchi, licensed under CC-BY-SA, full list of contributors on Wikipedia.
As actor 367
Detective Conan
1996
Hunter x Hunter
2011
Ranma1/2
2024
JUJUTSU KAISEN
2020
JoJo's Bizarre Adventure
2012
One Piece
1999
Ranma ½
1989
Death Note
2006
InuYasha
2000
Nadia: The Secret of Blue Water
1990
Cowboy Bebop
1998
The Twelve Kingdoms
2002
Atashin'chi
2002
The Ancient Magus' Bride
2017
Super Dragon Ball Heroes
2018
Yu-Gi-Oh! GX
2004
Zenki
1995
Urusei Yatsura
2022
Sgt. Frog
2004
Powerpuff Girls Z
2006
Yashahime: Princess Half-Demon
2020
Eyeshield 21
2005
Gintama the Movie 2026: Yoshiwara in Flames
2026
Kiki's Delivery Service
1989
Captain Tsubasa J
1994
Persona 4 The Golden Animation
2014
Revolutionary Girl Utena
1997
Claymore
2007
Bakuage Sentai Boonboomger
2024
Rin-ne
2015
Assassination Classroom the Movie: Our Time
2026
Mobile Fighter G Gundam
1994
Danganronpa: The Animation
2013
PreCure Splash Star
2006
BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense.
2020
Tokusou Sentai Dekaranger
2004
Tensou Sentai Goseiger
2010
Pretty Guardian Sailor Moon
2003
Detective Conan: The Raven Chaser
2009
Yat, The Space Patrol
1996
The Law of Ueki
2005
Peacemaker Kurogane
2003
B'T X
1996
Ressha Sentai ToQger
2014
Samurai Pizza Cats
1990
RADIANT
2018
Vinland Saga
2019
ODDTAXI
2021
Descending Stories
2016
Neo Angelique Abyss
2008
Doubutsu Sentai Zyuohger
2016
GeGeGe no Kitaro
2018
Magic Kaito 1412
2014
Wedding Peach
1995
CLAMP School Detectives
1997
Ayakashi: Samurai Horror Tales
2006
Baccano!
2007
PERSONA 4 the Animation
2011
Baby and Me
1996
Mechanical Marie
2025
The Gymnastics Samurai
2020
Detective Conan: The Phantom of Baker Street
2002
Miss Shachiku and the Little Baby Ghost
2022
One Piece: Baron Omatsuri and the Secret Island
2005
One Piece Film Red
2022
Shippuu! Iron Leaguer
1993
Lil' Red Riding Hood Cha-Cha
1994
Pecola
2001
The Hakkenden: Legend of the Dog Warriors
1990
Hikonin Sentai Akibaranger
2012
Freedom
2006
Train to the End of the World
2024
One Piece: The Movie
2000
Lupin the Third vs. Detective Conan: The Movie
2013
Fancy Lala
1998
Rampo Kitan: Game of Laplace
2015
Detective Conan: The Million-Dollar Pentagram
2024
Detective Conan: One-Eyed Flashback
2025
Death Note Relight 1: Visions of a God
2007
One Piece Film: Strong World
2009
Battle Doll: Angelic Layer
2001
One Piece Film: Z
2012
Gravitation
2000
BUCCHIGIRI?!
2024
Record of Lodoss War
1990
Kamikaze Kaitou Jeanne
1999
Detective Conan: Black Iron Submarine
2023
Kiba
2006
Stitch!
2008
Betterman
1999
Flint: The Time Detective
1998
Battle Angel
1993
Mecha-Ude: Mechanical Arms
2024
Detective Conan: The Time Bombed Skyscraper
1997
Red Baron
1994
Majikoi - Oh! Samurai Girls
2011
Space Academy
2021
HANAKAPPA
2010
Sister Princess
2001
Free Kick Toward Tomorrow
1992
Our Home's Fox Deity
2012
Mouse
2003
The Ancient Magus' Bride: The Boy from the West and the Knight of the Blue Storm
2021
Eden's Bowy
1999
Detective Conan: Captured in Her Eyes
2000
Jungle King Taa-chan
1993
Detective Conan: Quarter of Silence
2011
Android Kikaider
2000
Neighborhood Story
1995
KO Century Beast Warriors
1992
Genji Tsuushin Agedama
1991
Case Closed: The Fourteenth Target
1998
The Boy and the Beast
2015
Mazinger Z: Infinity
2017
Cyber Team in Akihabara
1998
Giant Robo: The Day the Earth Stood Still
1992
Hanada Shounen-shi
2002
One Piece Film: GOLD
2016
Ghastly Prince Enma Burning Up
2011
Detective Conan: Crossroad in the Ancient Capital
2003
Papuwa
2003
Doki Doki School Hours
2004
Detective Conan: Sunflowers of Inferno
2015
Detective Conan: The Darkest Nightmare
2016
Please Save My Earth
1993
Magi: Adventure of Sinbad
2014
DearS
2004
Miracle Girls
1993
Inuyasha the Movie: Affections Touching Across Time
2001
One Outs
2008
Jungle de Ikou!
1997
Valkyria Chronicles
2009
Devil Hunter Yohko
1990
Magic Kaito: Kid the Phantom Thief
2010
Galaxy Warring State Chronicle Rai
1994
Detective Conan: Jolly Roger in the Deep Azure
2007
Case Closed: Countdown to Heaven
2001
Shadow Skill
1998
Detective Conan: Dimensional Sniper
2014
Detective Conan: Private Eye in the Distant Sea
2013
Detective Conan: The Disappearance of Conan Edogawa - The Worst Two Days in History
2015
Estab-Life: Great Escape
2022
One Piece: Episode of Skypiea
2018
RG Veda
1991
Rizelmine
2002
Detective Conan: The Eleventh Striker
2012
Gun Frontier
2002
Detective Conan: The Last Wizard of the Century
1999
Super Zugan
1992
Death Note Relight 2: L's Successors
2009
航海王：和之国总集篇
2021
Monkey Typhoon
2002
Ranma 1/2 the Movie 2: Nihao My Concubine
1992
Dream 9 Toriko x One Piece x Dragon Ball Z Super Collaboration Special!!
2013
Detective Conan: Full Score of Fear
2008
Detective Conan: The Scarlet Bullet
2021
Slow Step
1991
One Piece "3D2Y": Overcome Ace's Death! Luffy's Vow to his Friends
2014
One Piece: Giant Mecha Soldier of Karakuri Castle
2006
Bronze: Zetsuai Since 1989
1996
Detective Conan: The Lost Ship in the Sky
2010
Detective Conan: Strategy Above the Depths
2005
Detective Conan: The Private Eyes' Requiem
2006
One Piece: Curse of the Sacred Sword
2004
The Cockpit
1993
One Piece Episode of East Blue
2017
Detective Conan: The Bride of Halloween
2022
One Piece: Clockwork Island Adventure
2001
Case Closed: The Crimson Love Letter
2017
Step Up Love Story
2002
One Piece Mugiwara Chase
2011
Detective Conan: Episode One - The Great Detective Turned Small
2017
One Piece: Adventure of Nebulandia
2015
Luffy's Fall! The Unexplored Region - Grand Adventure in the Ocean's Navel
2000
Detective Conan: Magician of the Silver Sky
2004
Zyuden Sentai Kyoryuger vs. Go-Busters: The Great Dinosaur War
2014
Inuyasha the Movie 3: Swords of an Honorable Ruler
2003
One Piece: Dead End Adventure
2003
Case Closed: Zero the Enforcer
2018
One Piece: Chopper's Kingdom on the Island of Strange Animals
2002
4 Week Continuous Special Super Sentai Strongest Battle!!
2019
One Piece: The Desert Princess and the Pirates: Adventure in Alabasta
2007
Samurai X: The Motion Picture
1997
Ressha Sentai ToQger vs. Kyoryuger: The Movie
2015
Ranma 1/2: Team Ranma vs. the Legendary Phoenix
1994
Grappler Baki: The Ultimate Fighter
1994
Inuyasha the Movie 2: The Castle Beyond the Looking Glass
2002
In Search of the Lost Future
2014
The Heroic Legend of Arslan: Age of Heroes
1991
Escaflowne: The Movie
2000
Battle Angel
1993
Animal Crossing: The Movie
2006
Pa-Pa-Pa the Movie: Perman: Tako de Pon! Ashi wa Pon!
2004
Asura
2012
A Tree of Palme
2002
Inuyasha the Movie 4: Fire on the Mystic Island
2004
Hunter x Hunter: Phantom Rouge
2013
One Piece: Stampede
2019
Tatsuya Miyanishi Theatre: Heart and Yummie
2010
Legend of the Dragon Kings
1991
Space Pirate Captain Herlock: Outside Legend - The Endless Odyssey
2002
Detective Conan: The Story of Ai Haibara: Black Iron Mystery Train
2023
One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom
2008
Plastic Little: The Adventures of Captain Tita
1994
Zetsuai 1989
1992
ODDTAXI in the Woods
2022
The Incident
2023
Pretty Guardian Sailor Moon Special Act: We're Getting Married!！
2004
One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream!
2003
Here Is Greenwood
1991
Tokyo Babylon
1992
Alice in Wonderland –Dive in Wonderland–
2025
One Piece: Dream Soccer King!
2002
Yu-Gi-Oh! Bonds Beyond Time
2010
Inferious Interplanetary War Chronicle - Condition Green
1991
One Piece: Episode of Luffy - Hand Island Adventure
2012
Lupin the Third vs. Detective Conan
2009
Fire Emblem
1996
Twinbee PARADISE
1998
Hanappe Bazooka
1992
Mighty Space Miners
1994
One Piece: Jango's Dance Carnival
2001
Go Nagai World
1991
One Piece Episode of Nami: Tears of a Navigator and the Bonds of Friends
2012
One Piece Episode of Alabasta Prologue
2011
One Piece: Glorious Island
2012
Gravitation: Lyrics of Love
1999
BEAT RUNNERS
2026
Makeruna!! Aku no Gundan!
2017
Ranma 1/2 the Movie: Big Trouble in Nekonron, China
1991
Ayane's High Kick
1997
One Piece Characters Log
2016
Unification of Japan Gaiden: Yamazaki Family — Joji and His Merry Friends
2024
Jewel BEM Hunter Lime
1996
Heart and Yummie
2010
One Piece: Heart of Gold
2016
Blue Memories: Boys, Colonizing Manchuria and Mongolia
1993
Armored Dragon Legend Villgust
1993
Pretty Cure All Stars DX3: Deliver the Future! The Rainbow-Colored Flower That Connects the World
2011
Detective Conan vs. Kid the Phantom Thief
2024
Gigant Big-Shot Tsukasa
2014
Yona Yona Penguin
2009
TIGER & BUNNY: The Beginning
2012
A Wind Named Amnesia
1990
Kindaichi Case Files : The Opera House Murders
1996
Camp Pikachu
2002
Dragon Slayer
1992
My Dread is School! Kanako Inuki Shout Collection
1999
Pokémon: Pikachu's Rescue Adventure
1999
Violence Jack: Hell's Wind
1990
Peacemaker Kurogane: Belief
2018
Pretty Cure All Stars New Stage: Friends of the Future
2012
One Piece Film Gold: Episode 0
2016
Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai
2014
Tottoi
1992
Dead Leaves
2004
Urotsukidōji II: Legend of the Demon Womb
1991
One Piece Episode of Merry: The Tale of One More Friend
2013
Madara
1991
Atashin'chi: The 3D Movie
2010
Persona4 the ANIMATION -The Factor of Hope
2012
One Piece 3D: Gekisou! Trap Coaster
2011
Dragon Knight: Wheel of Time
1998
Space Battleship Yamato Resurrection
2009
Shuriken Sentai Ninninger vs. ToQger the Movie: Ninjas in Wonderland
2016
Ressha Sentai ToQger vs. Kamen Rider Gaim: Spring Break Combined Special
2014
One Piece: Romance Dawn Story
2008
Bonobono: Secret of the Kumomo Tree
2002
GinRei
1994
Appleland Story
1992
Case Closed: The Fist of Blue Sapphire
2019
One Piece Episode of Sabo: The Three Brothers' Bond - The Miraculous Reunion and the Inherited Will
2015
Chibi Maruko-chan
1990
Devil Hunter Yohko
1990
One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy
2005
Futari wa Precure Splash☆Star the Movie: Tic-Tac Crisis Hanging by a Thin Thread!
2006
Angel's Feather
2006
Nineteen 19
1990
The Adventures of Tyrano Boy
2015
Dragon Knight 4: Wheel of Time
1998
Virgin Fleet
1998
Giant Robo: The Day the Earth Stood Still
1992
Kishin Douji Zenki Gaiden: Anki Kitan
1997
Sore Ike! Zukkoke Sannin-gumi
2004
Detective Conan: The Scarlet School Trip
2019
Delinquent in Drag
1992
Ultraman Super Fighter Legend
1996
Serena x One Piece: Sennyuu!! Sauzando Sunny-gou
2011
One Piece Special: Protect! The Last Great Stage
2003
Butt Attack Punisher Girl Gautaman R: The Final Battle Between Love & Tragedy!
1994
Magical Circle Guru Guru
1996
Butt Attack Punisher Girl Gautaman: The Birth of Gautaman
1994
HANAKAPPA – Adventure in the Butterfly Kingdom
2013
Pretty Cure All Stars DX: Everyone Is a Friend - A Miracle All Pretty Cures Together
2009
Conan vs. Kaito Kid
1997
Boyfriend
1992
Trusty Ginjiro
1991
Stage Play 「Spooky Kitaro」
2025
Chibi Maruko-chan: My Favorite Song
1992
Coicent
2010
Tokyo Babylon 1
1992
Neighborhood Story The Movie
1996
Detective Conan: Black History
2007
Barefoot Gin Rei
1994
Nagasaki 1945 ~ The Angelus Bells
2005
Eternal Family
1997
Madara
1991
Shadow Skill: The Movie
1996
One Piece: The Adventure in Grand Line
2002
The Heroic Legend of Arslan
1991
Kamiwaza Wanda
2017
Gosho Aoyama’s Collection of Short Stories
1999
Mouse Story: The Adventures of George and Gerald
2007
Super Sentai Strongest Battle Director's Cut
2019
Detective Conan: The 17-Year-Old Truth
2025
Urusei Yatsura: The Obstacle Course Swim Meet, It's a Rumic World: Urusei Yatsura
2008
Netrun-mon the Movie
2004
Bondage Queen Kate
1994
Noiseman Sound Insect
1997
Shadow Skill: Epilogue
1995
Ranma ½: Nightmare! Incense of Spring Sleep
2008
Ressha Sentai ToQger The Movie: Galaxy Line S.O.S.
2014
Samurider: Nazo no Tenkousei
1991
K.O. Beast
1992
Ressha Sentai ToQger Returns: Super ToQ #7 of Dreams
2015
Tomcat's Big Adventure
2014
Tokyo Babylon 2
1994
The Heroic Legend of Arslan II
1992
Teppen
1996
Pretty Cure All Stars DX2: The Light of Hope - Protect the Rainbow Jewel!
2010
Ryokunohara Labyrinth - Sparkling Phantom
1990
One Piece: The Great Treasure of Tongari Island
2016
Futari wa Precure Splash☆Star: Maji Doki Theater
2006
ワンピース特別編 わかりやすいルフィ大百科
2005
Desperate Love 1989
1992
Pokémon Mystery Dungeon: Explorers of Time & Darkness
2007
Guitar wo Motta Shounen: Kikaider VS Inazuman
2003
Ressha Sentai ToQger Final Live Tour 2015
2015
Pichu & Pikachu's Winter Vacation 2001
2000
Detective Conan Magic File
2007
Baby Felix & Friends
2000
The Mighty Gin Rei
1994
Pretty Guardian Sailor Moon: Act Zero
2005
One Piece - En route vers l'épisode 1000
2021
Welcome to Lodoss Island!
1998
Crows
1994
Silent Mobius Gaiden: The End of the Edo Period
1993
It's a Rumic World: 50th Anniversary Weekly★Shonen Sunday
2008
Dragon Quest - Emblem of Roto
1996
VISUALIVE Persona 4
2012
Ressha Sentai ToQger DVD Special: Farewell, Ticket! The Wasteland Super ToQ Battle!
2014
Engimon
2018
Tomorrow Will Be Better! Half a Sweet Potato
2005
Okaeri: Furusato no Karatsu
2017
One Piece Fan Letter
2024
La Blue Girl: Climax Taizen
2002
La Blue Girl
1992
Dragon Knight: Wheel of Time
1998
Bondage Queen Kate
1994
The Legend of Lyon: Flare
1986
Can Can Bunny Extra
1996
Lady Blue
1996
Reinou Tantei Miko: Phantom Hunter Miko
2000
1+2=Paradise
1990
Viper GTS
2002
Viper GTS
2002
Twin Angels
1994