Known for Acting

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.
2025
as Muzan Kibutsuji (voice)
1986
as Additional Voices (voice)
2023
as Conrad Leto (voice)
1993
as Yurimaru (voice)
2019
as Muzan Kibutsuji (voice)
2021
as Eddie Soul (voice)
2011
as Shogo Hikawa (voice)
2001
as Grove Marcus (voice)
1993
as Yutaka Matsuno (voice)
2012
as Momotaros - Kamen Rider Den-O Sword Form (voice)
2017
as Momotaros - Kamen Rider Den-O Sword Form (voice)
1996
as Shougo
2012
as Iruka Umino (voice)
1988
as Eud (voice)
1997
as Shijo Tsunami (voice)
1991
as Mousse (voice)
1992
as Mousse (voice)
2021
as Momotaros (voice) / Kamen Rider Den-O (voice)
1995
as Komada
2001
as Genjo Sanzo (voice)