Junichi Suwabe is a Japanese voice actor from Tokyo, active since 1995. He voices the demon Kyogai in Demon Slayer: Kimetsu no Yaiba (Ufotable), and is widely known for roles such as Ryomen Sukuna in Jujutsu Kaisen.
In Demon Slayer: Kimetsu no Yaiba, animated by Ufotable, Suwabe voices Kyogai, the drum-wielding demon who occupies the strange Tsuzumi Mansion. The part is one of many memorable antagonists in his catalogue; Suwabe has built a reputation for voicing commanding and often menacing figures, a strength that extends from Kyogai to the curse Ryomen Sukuna in Jujutsu Kaisen. Affiliated with the agency Haikyo, he has remained one of the most sought-after performers in Japanese animation across decades of work.
Born on March 29, 1972, in Tokyo, Suwabe has worked as a voice actor since 1995. His widely recognized roles include Grimmjow Jaegerjaquez in Bleach, Keigo Atobe in The Prince of Tennis, Victor Nikiforov in Yuri!!! on ICE, Yami Sukehiro in Black Clover, Archer in Fate/stay night, and Undertaker in Black Butler. He has also voiced Daiki Aomine in Kuroko's Basketball, Bercouli Synthesis One in Sword Art Online, Shota Aizawa and Jurota Shishida in My Hero Academia, Dandy in Space Dandy, Oda Sakunosuke in Bungo Stray Dogs, and Sentinel Prime in the Transformers franchise.

Demon Slayer: Infinity Castle earned $778 million globally and nearly 40 billion yen in Japan, but it still couldn't top Mugen Train's domestic record. Here's why that barely matters....

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....
Suwabe's performances have earned industry honors at the Seiyu Awards: he was nominated for the Best Singing Award at the 6th ceremony and received the Best Supporting Actor award at the 7th. Beyond his acting, he works in dubbing, providing the Japanese voice for the Korean actor Gong Yoo. He is also a member of the unit PHERO☆MEN, which he formed with fellow voice actor Kohsuke Toriumi.
Junichi Suwabe voices the demon Kyogai in Demon Slayer: Kimetsu no Yaiba, produced by studio Ufotable. Kyogai is the drum-wielding demon who occupies the strange Tsuzumi Mansion.
Junichi Suwabe is a Japanese voice actor from Tokyo, born on March 29, 1972, and active since 1995. In Demon Slayer: Kimetsu no Yaiba he voices the demon Kyogai, and he is affiliated with the agency Haikyo.
Beyond Kyogai in Demon Slayer, Suwabe is widely known for Ryomen Sukuna in Jujutsu Kaisen, Grimmjow Jaegerjaquez in Bleach, Victor Nikiforov in Yuri!!! on ICE, Archer in Fate/stay night, and Undertaker in Black Butler. He has also voiced Daiki Aomine in Kuroko's Basketball and Shota Aizawa in My Hero Academia.
Suwabe has been recognized at the Seiyu Awards, where he was nominated for the Best Singing Award at the 6th ceremony and received the Best Supporting Actor award at the 7th ceremony.
Suwabe is affiliated with the agency Haikyo. He has been one of the most sought-after performers in Japanese animation since beginning his career in 1995.
This content is original writing by Daddy Jim Headquarters based on the Demon Slayer anime series, manga, and official materials. Episode and chapter references are cited where applicable.
Rights holders
All rights belong to their respective owners.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
Official resources:
Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.