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.
Acting
TV
Naruto Shippūden
as Iruka Umino (voice)
2007
TV
Demon Slayer: Kimetsu no Yaiba
as Muzan Kibutsuji (voice)
2019
TV
Naruto
as Iruka Umino (voice)
2002
Movie
Castle in the Sky
as Additional Voices (voice)
1986
TV
Bleach
as Aaroniero Arruruerie (voice)
2004
TV
Hunter x Hunter
as Wing (voice)
2011
TV
Ranma ½
as Mousse (voice)
1989
TV
Mob Psycho 100
as Morizo Ebihara (voice)
2016
TV
Mob Psycho 100
as Musashi Goda (voice)
2016
Movie
Road to Ninja: Naruto the Movie
as Iruka Umino (voice)
2012
Movie
Ocean Waves
as Yutaka Matsuno (voice)
1993
TV
The Misfit of Demon King Academy
as Ahide Alobo Agatze (voice)
2020
Movie
Demon Slayer: Kimetsu no Yaiba Infinity Castle
as Muzan Kibutsuji (voice)
2025
TV
Samurai Champloo
as Yamane (voice)
2004
TV
Saint Seiya: Soul of Gold
as Scorpio Milo (voice)
2015
TV
Kaiju No. 8
as Kaiju No. 11 (voice)
2024
Movie
Ninja Scroll
as Yurimaru (voice)
1993
TV
SAINT SEIYA: Knights of the Zodiac
as Scorpio Milo (voice)
2019
Movie
My Hero Academia: World Heroes' Mission
as Eddie Soul (voice)
2021
TV
TRIGUN
as Legato Bluesummers (voice)
1998
Movie
Black Clover: Sword of the Wizard King
as Conrad Leto (voice)
2023
TV
Paranoia Agent
as Mitsuhiro Maniwa (voice)
2004
Movie
Mazinger Z: Infinity
as Tetsuya Tsurugi (voice)
2017
TV
Saint Seiya: Saintia Sho
as Scorpio Milo (voice)
2018
