Toshihiko Seki
Acting
Born 1962-06-11 · Sendai, Miyagi, Japan
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
Super Space Sheriff Gavan Infinity: Jo-Chaku Course
Feb 15, 2026
Demon Slayer: Kimetsu no Yaiba Infinity Castle
Jul 18, 2025
Nintama Rantarō: Invincible Master of the Dokutake Ninja
Dec 20, 2024
The Birth of Kitaro: The Mystery of GeGeGe
Nov 17, 2023
Black Clover: Sword of the Wizard King
Jun 16, 2023
Demon Slayer: Kimetsu no Yaiba - Asakusa Arc
Aug 25, 2022
My Hero Academia: World Heroes' Mission
Aug 6, 2021
Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Chronicles
Jul 22, 2021
Kamen Rider Den-O: The Birth of Pretty Den-O!
Aug 14, 2020
Demon Slayer: Kimetsu no Yaiba - Sibling's Bond
Mar 29, 2019
Kamen Rider Heisei Generations Forever
Dec 22, 2018
Mazinger Z: Infinity
Oct 27, 2017
Saraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!-
Oct 6, 2017
Kamen Rider × Super Sentai: Ultra Super Hero Wars
Mar 25, 2017
Naruto OVA 12: The Day Naruto Became Hokage
Jul 6, 2016
Mobile Suit Gundam: The Origin II - Artesia's Sorrow
Oct 31, 2015
Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai
Mar 29, 2014
Hunter x Hunter: The Last Mission
Dec 27, 2013
Higurashi: When They Cry - Outbreak
Aug 15, 2013
Road to Ninja: Naruto the Movie
Jul 28, 2012
Kamen Rider × Super Sentai: Super Hero Wars
Apr 21, 2012
Detective Conan: Quarter of Silence
Apr 16, 2011
OOO, Den-O, All Riders: Let's Go Kamen Riders
Apr 1, 2011
Nintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck!
Mar 12, 2011
OOO, Den-O, All Riders: Let's Go Kamen Riders: ~Let's Look! Only Your 48 Riders~
Mar 11, 2011
Kamen Rider × Kamen Rider × Kamen Rider The Movie Cho-Den-O Trilogy Movie Released Memorial Special Stage: Imagin Super Climax Tour 2010
Sep 21, 2010
Super Kamen Rider Den-O Trilogy - Episode Yellow: Treasure de End Pirates
Jun 19, 2010
Super Kamen Rider Den-O Trilogy - Episode Blue: The Dispatched Imagin is Newtral
Jun 5, 2010
Super Kamen Rider Den-O Trilogy - Episode Red: Zero's Star Twinkle
May 22, 2010
Kamen Rider Decade: Final Stage
Jan 21, 2010