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Mitsuo Yamaguchi aka Kappei Yamaguchi (his stage name) is a Japanese voice actor and actor from Fukuoka, affiliated with Gokū and 21st Century Fox.



  • Death Note (2006–2007)- L
  • Detective Conan (1996-ongoing)- Shin'ichi Kudō, Kaitō Kid/Kaito Kuroba
  • Futari wa Pretty Cure Splash Star (2006–2007)- Flappy
  • InuYasha: Kanketsu-hen (2009–2010)- Inuyasha
  • Keroro Gunsō (2004-ongoing)- Recruit Tororo
  • Mobile Fighter G Gundam (1994–1995)- Sai Saici
  • One Piece (1999-ongoing)- Usopp, Dogra, Fake Zoro
  • Persona 4: The Animation (2011-2012)- Teddie
  • Pocket Monsters (1997-ongoing)- Tōru
  • Ranma ½ (1989–1992)- Ranma Saotome, Kotarō
  • Yugioh GX (2004-2008)- Lyman Banner
  • YuYu Hakusho (1992–1994)- Jin


  • Detective Conan series (2000-ongoing)- Shin'ichi Kudō, Kaitō Kid/Kaitō Kuroba
  • Fire Emblem- Julian
  • Pocket Monsters: Pikachu no Fuyuyasumi 2001 (2001)- Delibird
  • Ranma ½ series (1993–2008)- Ranma Saotome


  • Detective Conan series (1997-ongoing)- Shin'ichi Kudō, Kaitō Kid/Kaitō Kuroba
  • Dōbutsu no Mori (2006)- Fūta the Owl
  • InuYasha series (2001–2004)- InuYasha
  • Kiki's Delivery Service (1989)- Tombo
  • One Piece series (2000-ongoing)- Usopp
  • Ranma ½ series (1991–1992)- Ranma Saotome

Video GamesEdit

  • Crash Bandicoot series- Crash Bandicoot, Fake Crash, Wa-Wa the Water Elemental
  • Destroy All Humans! (2005-2008)- Cryptosporidium 137
  • Harry Potter series- Harry Potter (as of Prizoner of Azkaban)
  • InuYasha series- InuYasha
  • NeoGeo Battle Coliseum (2005-2010)- Jin Chonshū, Jin Chonrei
  • One Piece series- Usopp
  • Persona 4 Arena (2012-2013)- Kuma/Teddie
  • Persona 4 Golden (2012-2013)- Kuma/Teddie
  • Pokémon Mystery Dungeon: Time Exploration Team and Darkness Exploration Team- Hikozaru
  • Ranma ½ series- Ranma Saotome
  • SD Gundam G Generation Spirits, WARS, WORLD- Tobia Arronax, Sai Saici
  • Shin Megami Tensei: Persona 4 (2008)- Kuma/Teddie


  • A Goofy Movie- Max Goof
  • Agent Cody Banks (2003)- Cody Banks (Frankie Muniz)
  • An Extremely Goofy Movie- Max Goof
  • Boy Meets World- Cory Matthews (seasons 3–7)
  • Charlie and the Chocolate Factory (television edition) (2005)- Mike Teavee
  • Disney's House of Mouse- Max Goof
  • Dragonball Evolution (2009)- Son Gokū (Justin Chatwin)
  • Dr. Dolittle 2 (2001)- Archie the Bear
  • Garfield: A Tail of Two Kitties (2006)- Garfield (Bill Murray)
  • Indiana Jones and the Kingdom of the Crystal Skull (2008)- Henry "Mutt Williams" Jones III (Shia LeBeouf)
  • Justice League (2001-2003)- Booster Gold
  • Looney Tunes- Bugs Bunny (Mel Blanc)
  • Madagascar (2005)- Mort
  • Madagascar: Escape 2 Africa (2008)- Mort
  • My Little Pony: Friendship Is Magic- Snips
  • Rio (2011)- Blu
  • South Park- Kyle Broflovski (Matt Stone), James "Jimmy" Vulmer (Trey Parker), Craig Tucker (Matt Stone), Clyde Donovan (Trey Parker), Sixth Grade Leader, Dougie
  • Space Jam (1996)- Bugs Bunny (Billy West)
  • Star Trek: Deep Space Nine (1993-1999)-Nog
  • The Looney Tunes Show- Bugs Bunny
  • Transformers Animated (2007-2009)- Jetfire

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