
Toshihiko Seki
Biography
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.
Movies

Black Clover: Sword of the Wizard King
2023

TO-Y
1987

Nintama Rantarō: Invincible Master of the Dokutake Ninja
2024

Kamen Rider Den-O & Kiva: Climax Deka
2008

Kamen Rider Den-O: The Birth of Pretty Den-O!
2020

Castle in the Sky
1986

Ranma 1/2 the Movie 2: Nihao My Concubine
1992

Demon Slayer: Kimetsu no Yaiba - Sibling's Bond
2019

Zillion: Burning Night
1988

Ninja Scroll
1993

Demon Slayer: Kimetsu no Yaiba - Asakusa Arc
2022

Demon Slayer: Kimetsu no Yaiba Infinity Castle
2025
TV Shows

Avataro Sentai Donbrothers meets Kamen Rider Den-O: Aim for it! The Don-O
2022

Kamen Rider Den-O
2007

Future GPX Cyber Formula
1991

Hyper Police
1997

Hunter x Hunter
2011

Ranma ½
1989

Demon Slayer: Kimetsu no Yaiba
2019

Madö King Granzört
1989

Naruto Shippūden
2007

Mob Psycho 100
2016

Kaiju No. 8
2024

The Misfit of Demon King Academy
2020