
Toshihiko Seki
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.
Known For

Demon Slayer: Kimetsu no Yaiba Infinity Castle
2025 · movie

Kamen Rider
1971 · tv

Bleach
2004 · tv

Naruto
2002 · tv

Kaiju No. 8
2024 · tv

Hunter x Hunter
2011 · tv

Naruto Shippūden
2007 · tv

Ranma ½
1989 · tv

Mob Psycho 100
2016 · tv

Mobile Suit Gundam SEED
2002 · tv

Rurouni Kenshin
2023 · tv

The Misfit of Demon King Academy
2020 · tv

Sekirei
2008 · tv

Golden Kamuy
2018 · tv

Higurashi: When They Cry
2006 · tv

The Most Heretical Last Boss Queen: From Villainess to Savior
2023 · tv

A Certain Magical Index
2008 · tv

Ranma1/2
2024 · tv

Saint Seiya: The Hades Chapter
2002 · tv

MÄR: Märchen Awakens Romance
2005 · tv

Demon Slayer: Kimetsu no Yaiba
2019 · tv

Nadia: The Secret of Blue Water
1990 · tv

Saiyuki
2000 · tv

Higurashi: When They Cry - NEW
2020 · tv

Star☆Twinkle PreCure
2019 · tv

Mobile Suit Gundam Wing
1995 · tv

PLUTO
2023 · tv

Guilty Crown
2011 · tv

Ninja Boy Rantaro
1993 · tv

Space Dandy
2014 · tv