Cowboy Bebop Wiki

Kōichi Yamadera is a Japanese voice actor who provided the Japanese voice of Spike Spiegel and Ein in all known dubs for Cowboy Bebop.


A prolific voice-actor in anime, Hollywood film dubbing, and commercials, Koichi Yamadera started as the modern voice of Disney’s Donald Duck – some of his most recent performances have included Ryuji Kaji in Evangelion, and Mewtwo in the first Pokémon movie. He also plays Caster in the popular TV series Oha-star. September 2001 sees the Japanese release of Koki Mitani’s new film Everybody’s House, for which Yamadera adds to his repertoire by playing the character of Kikuma Aonuma.[1]

Notable roles[]

Yakuza 4

Yakuza 5


Yakuza Dead Souls

Yakzua 6

Bosco Adventure

Ghost in the Shell

Honey and clover

Ninja Scroll

Ninja Batman

Ninja Nonsense


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