Profile photo of Toshihiko Seki

Toshihiko Seki

Toshihiko Seki, born on June 11, 1962, in Sendai, Miyagi Prefecture, Japan, is a celebrated Japanese voice actor, actor, singer, and narrator. He has been active in the entertainment industry since 1983 and is affiliated with 81 Produce, a prominent talent agency. Seki is known for his versatility, often voicing characters with serious or easily agitated personalities, such as Duo Maxwell in Mobile Suit Gundam Wing, Iruka Umino in Naruto, Kaien Shiba in Bleach and Riki in Ai no Kusabi. He has also portrayed deranged villains like Legato Bluesummers in Trigun and Muzan Kibutsuji in Demon Slayer: Kimetsu no Yaiba. One of his most iconic roles is Momotaros in Kamen Rider Den-O, a character he has reprised in numerous productions. In addition to his work in anime, Seki has contributed to video games, movies, and dubbing. His talent and dedication have earned him recognition, including being ranked as the 9th favorite voice actor in the 26th Annual Reader's Poll by Animage Magazine in 2004.

Filmography

2026
Super Space Sheriff Gavan Infinity: The Day the Sun Cried

as Cosmo Gavarion System Voice / Gavarion Trigger System Voice

Movie
2026
Super Space Sheriff Gavan Infinity: Jo-Chaku Course

as Gavarion Trigger System Voice (voice)

Movie
2025
Demon Slayer: Kimetsu no Yaiba Infinity Castle

as Muzan Kibutsuji (voice)

Movie
2012
Road to Ninja: Naruto the Movie

as Iruka Umino (voice)

Movie
2001
Vampire Hunter D: Bloodlust

as Grove Marcus (voice)

Movie
1986
Castle in the Sky

as Additional Voices (voice)

Movie
2025
SANDA

as Hifumi Ōshibu (voice)

TV Show
2018
Golden Kamuy

as Kazuo Henmi (voice)

TV Show
2011
Hunter x Hunter

as Wing (voice)

TV Show
2006
Higurashi: When They Cry

as Kyousuke Irie (voice)

TV Show
2002
Naruto

as Iruka Umino (voice)

TV Show
1993
Ninja Boy Rantaro

as Hansuke Doi

TV Show
1989
Ranma ½

as Mousse (voice)

TV Show