Kappei Yamaguchi
Mitsuo Yamaguchi , known professionally as Kappei Yamaguchi , is a Japanese actor, voice actor, and rakugoka affiliated with Gokū and 21st Century Fox. After making his voice acting debut in 1989 as the male version of Ranma Saotome in Ranma ½, Yamaguchi went on to other notable roles, including Inuyasha in Inuyasha and its sequel Yashahime, and L in Death Note. He currently voices Shinichi Kudo and Kaito Kid in Case Closed, Usopp in One Piece and Teddie in Persona 4. He is married and has a son, Ryunosuke, and a daughter, Akane. Ryunosuke and Akane are also voice actors, while the latter is also a rakugoka.
WikipediaHighlights
Frequent Collaborators
🎬 Movies
Assassination Classroom the Movie: Our Time
actor
2026
Gintama: Yoshiwara in Flames
actor
2026
Alice in Wonderland –Dive in Wonderland–
actor
2025
Detective Conan: One-Eyed Flashback
actor
2025
Detective Conan: The Million-Dollar Pentagram
actor
2024
Detective Conan vs. Kid the Phantom Thief
actor
2024
Detective Conan: The Story of Ai Haibara: Black Iron Mystery Train
actor
2023
One Piece Film Red
actor
2022
Detective Conan: The Bride of Halloween
actor
2022
ODDTAXI in the Woods
actor
2022
Detective Conan: The Scarlet Bullet
actor
2021
Detective Conan: The Scarlet School Trip
actor
2019
Chibi Maruko-chan
actor
2019
Case Closed: The Fist of Blue Sapphire
actor
2019
One Piece: Stampede
actor
2019
One Piece: Episode of Skypiea
actor
2018
Peacemaker Kurogane: Belief
actor
2018
Case Closed: Zero the Enforcer
actor
2018
Engimon
actor
2018
One Piece Episode of East Blue
actor
2017
Case Closed: The Crimson Love Letter
actor
2017
Kamiwaza Wanda
actor
2017
Detective Conan: Episode One - The Great Detective Turned Small
actor
2017
One Piece: Heart of Gold
actor
2016
One Piece: The Great Treasure of Tongari Island
actor
2016
One Piece Film: GOLD
actor
2016
One Piece Film Gold: Episode 0
actor
2016
Detective Conan: The Darkest Nightmare
actor
2016
Shuriken Sentai Ninninger vs. ToQger the Movie: Ninjas in Wonderland
actor
2016
One Piece: Adventure of Nebulandia
actor
2015
One Piece Episode of Sabo: The Three Brothers' Bond - The Miraculous Reunion and the Inherited Will
actor
2015
The Boy and the Beast
actor
2015
Ressha Sentai ToQger Returns: Super ToQ #7 of Dreams
actor
2015
Ressha Sentai ToQger Final Live Tour 2015
actor
2015
The Adventures of Tyrano Boy
actor
2015
Detective Conan: Sunflowers of Inferno
actor
2015
Detective Conan: The Disappearance of Conan Edogawa - The Worst Two Days in History
actor
2015
One Piece "3D2Y": Overcome Ace's Death! Luffy's Vow to his Friends
actor
2014
Tomcat's Big Adventure
actor
2014
Ressha Sentai ToQger DVD Special: Farewell, Ticket! The Wasteland Super ToQ Battle!
actor
2014
Ressha Sentai ToQger The Movie: Galaxy Line S.O.S.
actor
2014
Detective Conan: Dimensional Sniper
actor
2014
Ressha Sentai ToQger vs. Kamen Rider Gaim: Spring Break Combined Special
actor
2014
One Piece Episode of Merry: The Tale of One More Friend
actor
2013
Lupin the Third vs. Detective Conan: The Movie
actor
2013
Detective Conan: Private Eye in the Distant Sea
actor
2013
Hunter x Hunter: Phantom Rouge
actor
2013
One Piece: Glorious Island
actor
2012
One Piece Film: Z
actor
2012
One Piece: Episode of Luffy - Hand Island Adventure
actor
2012
Asura
actor
2012
One Piece Episode of Nami: Tears of a Navigator and the Bonds of Friends
actor
2012
Detective Conan: The Eleventh Striker
actor
2012
One Piece 3D: Gekisou! Trap Coaster
actor
2011
One Piece Episode of Alabasta Prologue
actor
2011
Detective Conan: Quarter of Silence
actor
2011
One Piece 3D: Straw Hat Chase
actor
2011
Coicent
actor
2010
Atashin'chi: The 3D Movie
actor
2010
Heart and Yummie
actor
2010
Detective Conan: The Lost Ship in the Sky
actor
2010
Yu-Gi-Oh! Bonds Beyond Time
actor
2010
Yona Yona Penguin
actor
2009
Space Battleship Yamato Resurrection
actor
2009
One Piece Film: Strong World
actor
2009
Death Note Relight 2: L's Successors
actor
2009
Detective Conan: The Raven Chaser
actor
2009
Lupin the Third vs. Detective Conan
actor
2009
Pretty Cure All Stars DX: Everyone Is a Friend - A Miracle All Pretty Cures Together
actor
2009
Urusei Yatsura: The Obstacle Course Swim Meet, It's a Rumic World: Urusei Yatsura
actor
2008
One Piece: Romance Dawn Story
actor
2008
Ranma ½: Nightmare! Incense of Spring Sleep
actor
2008
Detective Conan: Full Score of Fear
actor
2008
One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom
actor
2008
Mouse Story: The Adventures of George and Gerald
actor
2007
Detective Conan: Black History
actor
2007
Pokémon Mystery Dungeon: Explorers of Time & Darkness
actor
2007
Death Note Relight 1: Visions of a God
actor
2007
Detective Conan: Jolly Roger in the Deep Azure
actor
2007
One Piece: The Desert Princess and the Pirates: Adventure in Alabasta
actor
2007
Animal Crossing: The Movie
actor
2006
Futari wa Precure Splash☆Star the Movie: Tic-Tac Crisis Hanging by a Thin Thread!
actor
2006
Futari wa Precure Splash☆Star: Maji Doki Theater
actor
2006
Detective Conan: The Private Eyes' Requiem
actor
2006
One Piece: Giant Mecha Soldier of Karakuri Castle
actor
2006
One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy
actor
2005
Tomorrow Will Be Better! Half a Sweet Potato
actor
2005
Detective Conan: Strategy Above the Depths
actor
2005
Pretty Guardian Sailor Moon: Act Zero
actor
2005
One Piece: Baron Omatsuri and the Secret Island
actor
2005
Inuyasha the Movie 4: Fire on the Mystic Island
actor
2004
Pretty Guardian Sailor Moon Special Act: We're Getting Married!！
actor
2004
Netrun-mon the Movie
actor
2004
Detective Conan: Magician of the Silver Sky
actor
2004
One Piece: Curse of the Sacred Sword
actor
2004
Dead Leaves
actor
2004
Inuyasha the Movie 3: Swords of an Honorable Ruler
actor
2003
One Piece Special: Protect! The Last Great Stage
actor
2003
Detective Conan: Crossroad in the Ancient Capital
actor
2003
One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream!
actor
2003
One Piece: Dead End Adventure
actor
2003
Inuyasha the Movie 2: The Castle Beyond the Looking Glass
actor
2002
Camp Pikachu
actor
2002
Detective Conan: The Phantom of Baker Street
actor
2002
A Tree of Palme
actor
2002
One Piece: Chopper's Kingdom on the Island of Strange Animals
actor
2002
One Piece: Dream Soccer King!
actor
2002
Inuyasha the Movie: Affections Touching Across Time
actor
2001
Case Closed: Countdown to Heaven
actor
2001
One Piece: Clockwork Island Adventure
actor
2001
One Piece: Jango's Dance Carnival
actor
2001
Pichu & Pikachu's Winter Vacation 2001
actor
2000
Luffy's Fall! The Unexplored Region - Grand Adventure in the Ocean's Navel
actor
2000
Escaflowne: The Movie
actor
2000
Detective Conan: Captured in Her Eyes
actor
2000
One Piece: The Movie
actor
2000
Pokémon: Pikachu's Rescue Adventure
actor
1999
Detective Conan: The Last Wizard of the Century
actor
1999
Gosho Aoyama’s Collection of Short Stories
actor
1999
Virgin Fleet
actor
1998
Welcome to Lodoss Island!
actor
1998
Case Closed: The Fourteenth Target
actor
1998
Samurai X: The Motion Picture
actor
1997
Noiseman Sound Insect
actor
1997
Detective Conan: The Time Bombed Skyscraper
actor
1997
Eternal Family
actor
1997
Kindaichi Case Files Movie 1: The Opera House Murders
actor
1996
Bronze: Zetsuai Since 1989
actor
1996
Ultraman Super Fighter Legend
actor
1996
Shadow Skill: The Movie
actor
1996
Magical Circle Guru Guru
actor
1996
Dragon Quest - Emblem of Roto
actor
1996
Shadow Skill: Epilogue
actor
1995
Butt Attack Punisher Girl Gautaman R: The Final Battle Between Love & Tragedy!
actor
1994
Grappler Baki: The Ultimate Fighter
actor
1994
Ranma 1/2: Team Ranma vs. the Legendary Phoenix
actor
1994
The Mighty Gin Rei
actor
1994
Bondage Queen Kate
actor
1994
Butt Attack Punisher Girl Gautaman: The Birth of Gautaman
actor
1994
Plastic Little: The Adventures of Captain Tita
actor
1994
Barefoot Gin Rei
actor
1994
Crows
actor
1994
Blue Memories: Boys, Colonizing Manchuria and Mongolia
actor
1993
Battle Angel
actor
1993
Silent Mobius Gaiden: The End of the Edo Period
actor
1993
Chibi Maruko-chan: My Favorite Song
actor
1992
Hanappe Bazooka
actor
1992
Delinquent in Drag
actor
1992
Ranma 1/2 the Movie 2: Nihao My Concubine
actor
1992
Desperate Love 1989
actor
1992
Giant Robo: The Day the Earth Stood Still
actor
1992
Boyfriend
actor
1992
Tottoi
actor
1992
Inferious Interplanetary War Chronicle - Condition Green
actor
1991
Ranma 1/2 the Movie: Big Trouble in Nekonron, China
actor
1991
The Heroic Legend of Arslan
actor
1991
Urotsukidōji II: Legend of the Demon Womb
actor
1991
Urotsukidōji IV - The Infernal Road
actor
1991
Trusty Ginjiro
actor
1991
A Wind Named Amnesia
actor
1990
Violence Jack: Hell's Wind
actor
1990
Devil Hunter Yohko
actor
1990
Nineteen 19
actor
1990
Ryokunohara Labyrinth - Sparkling Phantom
actor
1990
Kiki's Delivery Service
actor
1989
📺 TV Shows
Daemons of the Shadow Realm
actor
2026
Mahoutsukai no Yome
actor
2017
Makeruna!! Aku no Gundan!
actor
2017
Nobunaga no Shinobi
actor
2016
Hitori no Shita: The Outcast
actor
2016
Kamiwaza Wanda
actor
2016
In Search of the Lost Future
actor
2014
Magic Kaito 1412
actor
2014
Persona 4 The Golden Animation
actor
2014
Danganronpa: The Animation
actor
2013
Persona 4: The Animation
actor
2011
Ghastly Prince Enma Burning Up
actor
2011
Pandora Hearts
actor
2009
Death Note
actor
2006
Shinseiki Duel Masters Flash
actor
2006
Eyeshield 21
actor
2005
The Law of Ueki
actor
2005
Yu-Gi-Oh! GX
actor
2004
Peacemaker
actor
2003
Mouse
actor
2003
Juuni Kokuki
actor
2002
Angelic Layer
actor
2001
InuYasha
actor
2000
One Piece
actor
1999
Betterman
actor
1999
Kindaichi Shounen no Jikenbo
actor
1996
Choja Reideen
actor
1996
Meitantei Conan
actor
1996
Gokinjo Monogatari
actor
1995
Red Baron
actor
1994
Miracle Girls
actor
1993
Cat Ninden Teyandee
actor
1990
Ranma ½
actor
1989