Yamadera Kouichi ist geboren am 17.7.1961 in Miyagi.
| "Appleseed: Ex Machina Film": Briareos |
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| "Bakuen Campus Guardress": Chiryuu |
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| "Bakumatsu Kikansetsu Irohanihoheto": Sakamoto Ryouma |
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| "Borgman": Dust Jead, Erzähler |
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| "Bubblegum Crisis OVA" (Folge 5): Fargo |
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| "Cowboy Bebop": Spike Spiegel |
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| "Di Gi Charat Nyo": Yama-chan |
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| "Dokkiri Doctor": Nishikikoji Haruka |
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| "Elf Princess Rane": Takarada Gou |
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| "Evangelion": Kaji Ryouji |
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| "Galaxy Angel": Captain Harry |
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| "Geobreeders": Irie |
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| "Ghost in the Shell": Togusa |
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| "Ghost in the Shell" (Folge 9): Baby Ruth |
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| "Harlock Saga": Captain Harlock, Tochiro |
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| "Honey and Clover": Lohmeyer |
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| "Kiki's Delivery Service": Polizist |
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| "Kiki's Delivery Service": Osonos Mann |
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| "Kiki's Delivery Service": Fernsehansager |
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| "Mermaid Forest": Yuta |
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| "Mermaid Forest": Schlüsselmann |
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| "Nadesico: Prince of Darkness": Hokushin |
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| "Ninja Scroll": Kibagami Juubei |
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| "Phantom Quest Corp.": Karino Kouzou |
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| "Photon": Papacharino Nanadan |
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| "Pokémon": Kamonegi |
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| "Queen Emeraldas": Ouyama Tochirou |
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| "Ranma 1/2": Hibiki Ryoga |
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| "Ruin Exploreres": Migel |
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| "Samurai Champloo" (Folge 8): Nagamitsu Saganshougen |
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| "Saiyuki": Sha Gojyo |
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| "Sakura Wars Film": Brent Furlong |
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| "Shamanic Princess": Kagetsu |
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| "Shinesman Shogo": Yamadera |
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| "Silent Möbius": Aida Nachi |
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| "Sol Bianca 1999": Sancho |
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| "Urotsukidoji": Niki Yuichi |
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| "Vampire Hunter D: Bloodlust": Meier Link |
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| "Wild Seven": Happyaku |
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| "X the Movie": Arisugawa Sorata |
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| "Xenosaga The Animation": Albedo, Gaignun |
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