Koichi Yamadera
Koichi Yamadera
Born: June 17, 1961, Shiogama, Miyagi Prefecture, Japan
Occupation: Voice actor
Years active: 1985 - now
Spouse: Mika Kanai (1994-2006, divorced)
Rie Tanaka (2012-present)

Koichi Yamadera (山寺 宏一 Yamadera Kōichi) is a Japanese voice actor that affiliated to Across Entertainment.


Other roles

  • Ninja Scroll - Voice of Jūbei Kibagami
  • Cowboy Bebop - Voice of Spike Spiegel
  • Dragon Ball Z: Battle of Gods - Voice of Beerus: The God of Destruction
  • Ghost in the Shell - Voice of Togusa
  • Neon Genesis Evangelion - Voice of Ryoji Kaji
  • Anpanman - Voice of Cheese
  • Ranma ½ - Voice of Ryōga Hibiki
  • Lupin III - Voice of Koichi Zenigata (replacing the late Goro Naya)
  • Lilo and Stitch (Japanese dub) - Voice of Stitch
  • Shrek (Japanese dub) - Voice of Donkey
  • One Piece - Voice of Donquixote Rosinante
  • Hunter x Hunter (2011 version) - Voice of Silva Zoldyck
  • Samurai Pizza Cats - Voice of Bad Bird
  • Sword Art Online - Voice of Akihiko Kayaba


  • Koichi Yamadera's favorite Ultra Warriors are Ultraman, Ultraseven and Ultraman Ace.
  • Discounting the Jackal vs Ultraman, Zadeath in Orb the Movie is his first role in the Ultra Series since Lloyd Wilder in Ultraman G. Because of this, he was excited to return to the franchise and casted as Zadeath. Although initially nervous about this role, the director encouraged ad-libs in his role.[1]



External Links