Koichi yamadera

Koichi Yamadera, Ryōji Kaji's seiyu

Kōichi Yamadera (山寺 宏一 Yamadera Kōichi, born June 17, 1961) is a Japanese voice actor, actor, tarento, narrator, master of ceremonies and impressionist from Shiogama, Miyagi Prefecture. He graduated from Tohoku Gakuin University's economics school, and is currently affiliated with Across Entertainment. Before that, he was affiliated with the Tokyo Actor's Consumer's Cooperative Society.

His nickname is Yama-chan (山ちゃん Yama-chan). As a radio personality, he is known as Bazooka Yamadera (バズーカ山寺 Bazūka Yamadera) among other things. He is best known for his roles in Ninja Scroll (as Jūbei Kibagami), Aladdin: Japanese Version (as The Genie), Cowboy Bebop (as Spike Spiegel) and (Ein), Ghost in the Shell (as Togusa), Neon Genesis Evangelion (as Ryōji Kaji), Soreike! Anpanman (as Cheese), Ranma ½ (as Ryōga Hibiki/P-chan and the Jusenkyō Guide). He is known for voicing Jim Carrey and Eddie Murphy in the Japanese language releases of their respective films.

A selection of other characters voiced by Koichi YamaderaEdit

Bubblegum Crisis (OVA) as Fargo

Cowboy Beebop as Spike Spiegel

Ghost in the Shell (movie & TV series) as Togusa

Guy, Double Target as Guy

Lupin III: Crisis in Tokyo as Michael Suzuki

Mermaid Forest and Mermaid's Scar as Yuta

Milennium Actress as Key Man

Ninja Scroll (movie) as Jubei Kibagami

Paprika (movie) as Doctor Morio Osanai

Ranma 1/2 as Ryouga Hibiki/P-chan and Jusenkyo Guide

Stitch! (Japanese/Madhouse Version) as Stitch

and many more...


  • In addition to anime work, Yamadera's output included dubbing numerous Western films and TV shows, as well as Disney features, in his long career.
  • Is a host of an early-morning television show.
  • Yamadera is extremely versatile, be it heroes or villains, and even going as far as voicing as a woman.

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