
Rikiya Koyama is a veteran Japanese actor, voice actor, and narrator with Haiyuza Theatre Company, recognized for voicing tall, imposing characters across major anime franchises; in Jujutsu Kaisen, produced by MAPPA, he voices Kensuke Nagino.
Koyama lends his voice to Kensuke Nagino in Jujutsu Kaisen, a supporting part within the show's wide ensemble cast. The casting draws on the deep, commanding delivery he applies across numerous action and drama titles. It adds one more credit to a voice career now spanning nearly four decades.
Koyama ranks among Japan's most prolific voice actors. His signature roles include Ging Freecss from Hunter x Hunter, Yamato out of Naruto Shippuden, and Coyote Starrk in Bleach, along with the second voice of Kogoro Mouri in the long-running Case Closed franchise since 2009. He often takes on towering or monstrous villains, including Fukuro in Fairy Tail and the Deep Sea King in One Punch Man, and he serves as the go-to Japanese dub voice for actors such as George Clooney, Kiefer Sutherland, Dwayne Johnson, and Denzel Washington.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
Rikiya Koyama voices Kensuke Nagino in Jujutsu Kaisen, a supporting part within the show's wide ensemble cast. He is also widely recognized for voicing Ging Freecss in Hunter x Hunter.
Rikiya Koyama has voiced Kogoro Mouri in the long-running Case Closed franchise, known as Detective Conan, since 2009, serving as the character's second voice actor. His career in voice acting stretches back to 1987.
Rikiya Koyama's signature roles include Yamato in Naruto Shippuden and Coyote Starrk in Bleach. He performs with the Haiyuza Theatre Company.
Rikiya Koyama serves as the go-to Japanese dub voice for actors including George Clooney, Kiefer Sutherland, Dwayne Johnson, and Denzel Washington. He often takes on towering or villainous roles too, such as Fukuro in Fairy Tail and the Deep Sea King in One Punch Man.
Born in 1963, Rikiya Koyama is a veteran Japanese actor, voice actor, and narrator whose career spans nearly four decades since 1987. His deep, commanding delivery is applied across numerous action and drama titles.
This content is original writing by Daddy Jim Headquarters based on the Jujutsu Kaisen anime series, manga, and official materials. Episode and chapter references are cited where applicable.
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