6.4
Detective Conan: The Counterfeit Case of Ultra 30
2026
Kappei Yamaguchi
Acting
Born May 23, 1965Fukuoka, Fukuoka, Japan
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.
Movies
See All
10.0
A Lazy Day in Thousand Sunny
2026
7.7
Assassination Classroom the Movie: Our Time
2026
9.0
Gintama the Movie 2026: Yoshiwara in Flames
2026
0.0
Detective Conan: The 17-Year-Old Truth
2025
7.7
Alice in Wonderland –Dive in Wonderland–
2025
0.0
Stage Play 「Spooky Kitaro」
2025
7.2
Detective Conan: One-Eyed Flashback
2025
8.7
One Piece Fan Letter
2024
0.0
Unification of Japan Gaiden: Yamazaki Family — Joji and His Merry Friends
2024
6.9
Detective Conan: The Million-Dollar Pentagram
2024
6.4
Detective Conan vs. Kid the Phantom Thief
2024
7.0
Detective Conan: Black Iron Submarine
2023
6.7
Detective Conan: The Story of Ai Haibara: Black Iron Mystery Train
2023
7.2
One Piece Film Red
2022
6.4
Detective Conan: The Bride of Halloween
2022
6.3
ODDTAXI in the Woods
2022
7.3
One Piece - En route vers l'épisode 1000
2021
6.5
Detective Conan: The Scarlet Bullet
2021
6.5
Detective Conan: The Scarlet School Trip
2019
9.0
Super Sentai Strongest Battle Director's Cut
2019
6.2
Case Closed: The Fist of Blue Sapphire
2019
7.8
One Piece: Stampede
2019
0.0
Planetarium HANAKAPPA: Bloom! Pop! Space Travel
2018
7.1
One Piece: Episode of Skypiea
2018
6.1
Peacemaker Kurogane: Belief
2018
6.2
Case Closed: Zero the Enforcer
2018
5.0
Engimon
2018
7.0
Mazinger Z: Infinity
2017
7.7
One Piece Episode of East Blue
2017
6.5
Case Closed: The Crimson Love Letter
2017
0.0
Okaeri: Furusato no Karatsu
2017
6.0
Kamiwaza Wanda
2017
7.5
Detective Conan: Episode One - The Great Detective Turned Small
2017
7.0
One Piece: The Great Treasure of Tongari Island
2016
7.2
One Piece Film: GOLD
2016
7.4
One Piece: Heart of Gold
2016
6.7
One Piece Film Gold: Episode 0
2016
6.8
Detective Conan: The Darkest Nightmare
2016
8.2
Shuriken Sentai Ninninger vs. ToQger the Movie: Ninjas in Wonderland
2016
7.7
One Piece: Adventure of Nebulandia
2015
7.0
One Piece Episode of Sabo: The Three Brothers' Bond - The Miraculous Reunion and the Inherited Will
2015
7.9
The Boy and the Beast
2015
7.0
Ressha Sentai ToQger Final Live Tour 2015
2015
7.5
Ressha Sentai ToQger Returns: Super ToQ #7 of Dreams
2015
6.6
The Adventures of Tyrano Boy
2015
6.2
Detective Conan: Sunflowers of Inferno
2015
7.1
Detective Conan: The Disappearance of Conan Edogawa - The Worst Two Days in History
2015
6.9
Ressha Sentai ToQger vs. Kyoryuger: The Movie
2015
8.0
Tomcat's Big Adventure
2014
0.0
Ressha Sentai ToQger DVD Special: Farewell, Ticket! The Wasteland Super ToQ Battle!
2014
7.1
One Piece "3D2Y": Overcome Ace's Death! Luffy's Vow to his Friends
2014
7.0
Ressha Sentai ToQger The Movie: Galaxy Line S.O.S.
2014
6.8
Detective Conan: Dimensional Sniper
2014
7.1
Ressha Sentai ToQger vs. Kamen Rider Gaim: Spring Break Combined Special
2014
6.3
Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai
2014
6.8
Zyuden Sentai Kyoryuger vs. Go-Busters: The Great Dinosaur War
2014
6.9
Lupin the Third vs. Detective Conan: The Movie
2013
7.1
One Piece Episode of Merry: The Tale of One More Friend
2013
6.6
Detective Conan: Private Eye in the Distant Sea
2013
0.0
HANAKAPPA: Adventure in the Butterfly Kingdom
2013
0.0
That's HANAKAPPA Musical: Bread or Rice, Which Is It!?
2013
7.3
Dream 9 Toriko x One Piece x Dragon Ball Z Super Collaboration Special!!
2013
7.1
Hunter x Hunter: Phantom Rouge
2013
0.0
HANAKAPPA's Traffic Safety: Turn Right, Left, Right in Search of a Cake
2013
6.4
One Piece: Glorious Island
2012
6.7
One Piece: Episode of Luffy - Hand Island Adventure
2012
7.5
One Piece Film: Z
2012
7.2
Asura
2012
6.4
TIGER & BUNNY: The Beginning
2012
7.0
One Piece Episode of Nami: Tears of a Navigator and the Bonds of Friends
2012
0.0
VISUALIVE Persona 4
2012
8.3
Persona4 the ANIMATION -The Factor of Hope
2012
6.8
Detective Conan: The Eleventh Striker
2012
6.3
Pretty Cure All Stars New Stage: Friends of the Future
2012
6.8
One Piece 3D: Gekisou! Trap Coaster
2011
7.2
One Piece Episode of Alabasta Prologue
2011
7.1
Detective Conan: Quarter of Silence
2011
6.7
One Piece Mugiwara Chase
2011
7.3
Pretty Cure All Stars DX3: Deliver the Future! The Rainbow-Colored Flower That Connects the World
2011
10.0
Serena x One Piece: Sennyuu!! Sauzando Sunny-gou
2011
6.0
Coicent
2010
7.7
Atashin'chi: The 3D Movie
2010
8.1
Heart and Yummie
2010
7.1
Detective Conan: The Lost Ship in the Sky
2010
5.7
Pretty Cure All Stars DX2: The Light of Hope - Protect the Rainbow Jewel!
2010
7.5
One Piece Film: Strong World
2010
6.6
Yu-Gi-Oh! Bonds Beyond Time
2010
5.3
Yona Yona Penguin
2009
6.0
Space Battleship Yamato Resurrection
2009
7.4
Death Note Relight 2: L's Successors
2009
7.3
Detective Conan: The Raven Chaser
2009
6.9
Lupin the Third vs. Detective Conan
2009
6.6
Pretty Cure All Stars DX: Everyone Is a Friend - A Miracle All Pretty Cures Together
2009
6.1
Urusei Yatsura: The Obstacle Course Swim Meet, It's a Rumic World: Urusei Yatsura
2008
6.2
One Piece: Romance Dawn Story
2008
7.0
Ranma ½: Nightmare! Incense of Spring Sleep
2008
7.3
It's a Rumic World: 50th Anniversary Weekly★Shonen Sunday
2008
6.9
Detective Conan: Full Score of Fear
2008
7.0
One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom
2008
4.7
Mouse Story: The Adventures of George and Gerald
2007
6.0
Detective Conan: Black History
2007
5.7
Pokémon Mystery Dungeon: Explorers of Time & Darkness
2007
7.9
Death Note Relight 1: Visions of a God
2007
6.5
Detective Conan: Jolly Roger in the Deep Azure
2007
5.0
Detective Conan Magic File
2007
6.9
One Piece: The Desert Princess and the Pirates: Adventure in Alabasta
2007
6.8
Animal Crossing: The Movie
2006
6.6
Futari wa Precure Splash☆Star the Movie: Tic-Tac Crisis Hanging by a Thin Thread!
2006
7.0
Futari wa Precure Splash☆Star: Maji Doki Theater
2006
7.1
Detective Conan: The Private Eyes' Requiem
2006
6.9
One Piece: Giant Mecha Soldier of Karakuri Castle
2006
0.0
ワンピース特別編 わかりやすいルフィ大百科
2005
7.0
One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy
2005
3.0
Nagasaki 1945 ~ The Angelus Bells
2005
0.0
Tomorrow Will Be Better! Half a Sweet Potato
2005
6.9
Detective Conan: Strategy Above the Depths
2005
9.0
Pretty Guardian Sailor Moon: Act Zero
2005
7.2
One Piece: Baron Omatsuri and the Secret Island
2005
7.6
Inuyasha the Movie 4: Fire on the Mystic Island
2004
8.8
Pretty Guardian Sailor Moon Special Act: We're Getting Married!！
2004
6.0
Netrun-mon the Movie
2004
7.0
Detective Conan: Magician of the Silver Sky
2004
6.9
One Piece: Curse of the Sacred Sword
2004
6.0
Pa-Pa-Pa the Movie: Perman: Tako de Pon! Ashi wa Pon!
2004
7.1
Dead Leaves
2004
7.7
Inuyasha the Movie 3: Swords of an Honorable Ruler
2003
7.3
One Piece Special: Protect! The Last Great Stage
2003
7.5
Guitar wo Motta Shounen: Kikaider VS Inazuman
2003
7.1
Detective Conan: Crossroad in the Ancient Capital
2003
6.5
One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream!
2003
7.0
One Piece: Dead End Adventure
2003
7.7
Inuyasha the Movie 2: The Castle Beyond the Looking Glass
2002
4.5
Bonobono: Secret of the Kumomo Tree
2002
5.9
Camp Pikachu
2002
0.0
One Piece: The Adventure in Grand Line
2002
7.8
Detective Conan: The Phantom of Baker Street
2002
6.5
La Blue Girl: Climax Taizen
2002
7.0
A Tree of Palme
2002
6.6
One Piece: Dream Soccer King!
2002
6.7
One Piece: Chopper's Kingdom in the Strange Animal Island
2002
7.5
Inuyasha the Movie: Affections Touching Across Time
2001
7.4
Case Closed: Countdown to Heaven
2001
6.9
One Piece: Clockwork Island Adventure
2001
6.9
One Piece: Jango's Dance Carnival
2001
6.8
Pichu & Pikachu's Winter Vacation 2001
2000
6.0
Luffy's Fall! The Unexplored Region - Grand Adventure in the Ocean's Navel
2000
6.6
Escaflowne: The Movie
2000
7.4
Detective Conan: Captured in Her Eyes
2000
7.1
One Piece: The Movie
2000
4.0
Baby Felix & Friends
2000
6.8
My Dread is School! Kanako Inuki Shout Collection
1999
6.3
Pokémon: Pikachu's Rescue Adventure
1999
7.3
Detective Conan: The Last Wizard of the Century
1999
6.0
Gosho Aoyama’s Collection of Short Stories
1999
4.0
Twinbee PARADISE
1998
5.3
Dragon Knight: Wheel of Time
1998
0.0
Welcome to Lodoss Island!
1998
Virgin Fleet
8.0
Virgin Fleet
1998
7.2
Case Closed: The Fourteenth Target
1998
7.3
Samurai X: The Motion Picture
1997
6.8
Noiseman Sound Insect
1997
Conan vs. Kaito Kid
0.0
Conan vs. Kaito Kid
1997
7.4
Detective Conan: The Time Bombed Skyscraper
1997
7.0
Eternal Family
1997
4.2
Kishin Douji Zenki Gaiden: Anki Kitan
1997
6.6
Kindaichi Case Files : The Opera House Murders
1996
4.6
Bronze: Zetsuai Since 1989
1996
0.0
Ultraman Super Fighter Legend
1996
6.3
Shadow Skill: The Movie
1996
5.3
Magical Circle Guru Guru
1996
4.0
Dragon Quest - Emblem of Roto
1996
5.5
Neighborhood Story The Movie
1996
5.0
Shadow Skill: Epilogue
1995
2.5
Butt Attack Punisher Girl Gautaman R: The Final Battle Between Love & Tragedy!
1994
6.7
Grappler Baki: The Ultimate Fighter
1994
7.7
Ranma 1/2: Team Ranma vs. the Legendary Phoenix
1994
10.0
The Mighty Gin Rei
1994
7.0
Bondage Queen Kate
1994
3.8
Butt Attack Punisher Girl Gautaman: The Birth of Gautaman
1994
5.7
Plastic Little: The Adventures of Captain Tita
1994
0.0
Tokyo Babylon 2
1994
7.0
Barefoot Gin Rei
1994
3.3
Crows
1994
4.0
Blue Memories: Boys, Colonizing Manchuria and Mongolia
1993
6.8
Battle Angel
1993
9.0
Silent Mobius Gaiden: The End of the Edo Period
1993
7.6
Chibi Maruko-chan: My Favorite Song
1992
3.0
Appleland Story
1992
0.0
Tokyo Babylon 1
1992
6.1
Hanappe Bazooka
1992
5.6
Delinquent in Drag
1992
8.0
Ranma 1/2 the Movie 2: Nihao My Concubine
1992
4.6
Desperate Love 1989
1992
6.7
Giant Robo: The Day the Earth Stood Still
1992
4.5
The Heroic Legend of Arslan II
1992
7.0
K.O. Beast
1992
0.0
Boyfriend
1992
6.1
Tottoi
1992
0.0
Inferious Interplanetary War Chronicle - Condition Green
1991
7.3
Ranma 1/2 the Movie: Big Trouble in Nekonron, China
1991
5.8
The Heroic Legend of Arslan
1991
5.8
Urotsukidōji II: Legend of the Demon Womb
1991
4.0
Trusty Ginjiro
1991
6.5
Madara
1991
4.0
Samurider: Nazo no Tenkousei
1991
5.9
A Wind Named Amnesia
1990
5.3
Violence Jack: Hell's Wind
1990
7.0
Chibi Maruko-chan
1990
9.0
Devil Hunter Yohko
1990
8.5
Nineteen 19
1990
3.5
Ryokunohara Labyrinth - Sparkling Phantom
1990
7.8
Kiki's Delivery Service
1989
TV Shows
See All
9.0
BEAT RUNNERS
7.8
Mechanical Marie
9.0
One Piece Log: Fish-Man Island Saga
8.1
Ranma1/2
7.1
Mecha-Ude: Mechanical Arms
7.0
Train to the End of the World
8.6
Bakuage Sentai Boonboomger
7.4
BUCCHIGIRI?!
8.9
The Incident
6.8
Urusei Yatsura
6.8
Urusei Yatsura
6.8
Urusei Yatsura
6.3
Miss Shachiku and the Little Baby Ghost
5.6
Estab-Life: Great Escape
7.8
The Ancient Magus' Bride: The Boy from the West and the Knight of the Blue Storm
0.0
Space Academy
8.2
ODDTAXI
10.0
航海王：和之国总集篇
6.3
The Gymnastics Samurai
8.6
JUJUTSU KAISEN
8.3
Yashahime: Princess Half-Demon
7.5
BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense.
8.5
Vinland Saga
6.5
4 Week Continuous Special Super Sentai Strongest Battle!!
7.2
RADIANT
7.6
Super Dragon Ball Heroes
7.1
GeGeGe no Kitaro
8.4
The Ancient Magus' Bride
5.0
Makeruna!! Aku no Gundan!
9.0
One Piece Characters Log
6.5
Doubutsu Sentai Zyuohger
8.0
Descending Stories
6.3
Rampo Kitan: Game of Laplace
7.4
Rin-ne
8.0
Magic Kaito 1412
5.6
In Search of the Lost Future
7.4
Persona 4 The Golden Animation
7.1
Magi: Adventure of Sinbad
0.0
Gigant Big-Shot Tsukasa
7.4
Ressha Sentai ToQger
7.6
Danganronpa: The Animation
9.5
One Pace
8.5
JoJo's Bizarre Adventure
8.5
JoJo's Bizarre Adventure
7.0
Our Home's Fox Deity
8.2
Hikonin Sentai Akibaranger
8.2
Hikonin Sentai Akibaranger
7.5
PERSONA 4 the Animation
5.9
Majikoi - Oh! Samurai Girls
8.7
Hunter x Hunter
7.3
Ghastly Prince Enma Burning Up
2.5
Tatsuya Miyanishi Theatre: Heart and Yummie
8.1
Magic Kaito: Kid the Phantom Thief
6.0
HANAKAPPA
7.1
Tensou Sentai Goseiger
6.7
Valkyria Chronicles
7.0
Stitch!
8.3
One Outs
3.6
Neo Angelique Abyss
7.8
Baccano!
8.2
Claymore
5.6
Freedom
8.6
Death Note
8.1
Powerpuff Girls Z
2.2
Angel's Feather
7.6
Kiba
8.1
PreCure Splash Star
7.3
Ayakashi: Samurai Horror Tales
8.4
Eyeshield 21
7.7
The Law of Ueki
7.9
Yu-Gi-Oh! GX
6.2
DearS
4.3
Doki Doki School Hours
5.0
Sore Ike! Zukkoke Sannin-gumi
7.0
Sgt. Frog
8.4
Tokusou Sentai Dekaranger
6.2
Peacemaker Kurogane
7.5
Pretty Guardian Sailor Moon
5.3
Papuwa
6.4
Mouse
7.6
Viper GTS
0.0
Viper GTS
7.0
Space Pirate Captain Herlock: Outside Legend - The Endless Odyssey
7.2
Hanada Shounen-shi
6.7
Monkey Typhoon
4.8
Step Up Love Story
8.4
Atashin'chi
7.9
The Twelve Kingdoms
6.6
Rizelmine
6.8
Gun Frontier
5.5
Pecola
5.4
Sister Princess
7.3
Battle Doll: Angelic Layer
5.8
Android Kikaider
8.6
InuYasha
6.5
Gravitation
7.0
Reinou Tantei Miko: Phantom Hunter Miko
8.8
One Piece
0.0
Gravitation: Lyrics of Love
9.2
Eden's Bowy
7.4
Betterman
7.3
Kamikaze Kaitou Jeanne
6.0
Dragon Knight: Wheel of Time
0.0
Dragon Knight 4: Wheel of Time
6.4
Flint: The Time Detective
8.0
Shadow Skill
8.0
Fancy Lala
6.5
Cyber Team in Akihabara
8.5
Cowboy Bebop
5.7
CLAMP School Detectives
8.1
Revolutionary Girl Utena
6.8
Jungle de Ikou!
4.4
Ayane's High Kick
4.0
Jewel BEM Hunter Lime
4.0
Yat, The Space Patrol
5.0
Lady Blue
8.4
Baby and Me
8.3
B'T X
7.5
Fire Emblem
0.0
Teppen
4.5
Can Can Bunny Extra
8.0
Case Closed
6.8
Neighborhood Story
7.1
Wedding Peach
8.0
Zenki
8.0
Mighty Space Miners
8.0
Captain Tsubasa J
7.6
Twin Angels
5.5
Bondage Queen Kate
7.5
Mobile Fighter G Gundam
6.7
Galaxy Warring State Chronicle Rai
8.0
Red Baron
8.0
Red Baron
8.5
GinRei
6.7
Lil' Red Riding Hood Cha-Cha
4.8
Please Save My Earth
5.6
The Cockpit
6.0
Jungle King Taa-chan
7.4
Battle Angel
5.0
Shippuu! Iron Leaguer
5.5
Armored Dragon Legend Villgust
8.2
Miracle Girls
5.4
Tokyo Babylon
4.3
Dragon Slayer
2.0
Super Zugan
10.0
Zetsuai 1989
9.8
Giant Robo: The Day the Earth Stood Still
6.9
La Blue Girl
7.8
KO Century Beast Warriors
6.0
KO世紀ビースト三獣士
6.5
Free Kick Toward Tomorrow
7.3
Here Is Greenwood
3.8
Genji Tsuushin Agedama
7.5
The Heroic Legend of Arslan: Age of Heroes
5.2
Legend of the Dragon Kings
5.9
RG Veda
7.8
Slow Step
7.0
Madara
8.0
Go Nagai World
6.1
Devil Hunter Yohko
7.2
The Hakkenden: Legend of the Dog Warriors
7.5
Record of Lodoss War
7.4
Nadia: The Secret of Blue Water
4.1
1+2=Paradise
8.1
Samurai Pizza Cats
8.6
Ranma ½
5.0