Toshihiko Seki

Toshihiko Seki

Known for

Acting

Born

June 11, 1962 (age 64)

Birthplace

Sendai, Japon

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...

Best known work

Naruto Shippūden

Naruto Shippūden

2007

Demon Slayer: Kimetsu no Yaiba

Demon Slayer: Kimetsu no Yaiba

2019

Naruto

Naruto

2002

Castle in the Sky

Castle in the Sky

1986

Bleach

Bleach

2004

Hunter x Hunter

Hunter x Hunter

2011

Demon Slayer: Kimetsu no Yaiba Infinity Castle

Demon Slayer: Kimetsu no Yaiba Infinity Castle

2025

Ranma ½

Ranma ½

1989

Mob Psycho 100

Mob Psycho 100

2016

Road to Ninja: Naruto the Movie

Road to Ninja: Naruto the Movie

2012

Filmography

2026
Chō Uchū Keiji Gyaban Infiniti Taiyō ga Naita Hi
as Cosmo Gavarion System Voice / Gavarion Trigger System Voice
2026
My Ribdiculous ReincarnationTV
2026
Super Space Sheriff Gavan Infinity: Jo-Chaku Course
as Gavarion Trigger System Voice (voice)
2026
PROJECT R.E.D.TV
as GavarionTrigger / CosmoGavarion (voice) (23 episodes)
2025
SANDATV
as Hifumi Ōshibu (voice) (12 episodes)
2025
Demon Slayer: Kimetsu no Yaiba Infinity Castle
as Muzan Kibutsuji (voice)
2025
U Takes TerraTV
as Chongyue (Voice) (1 episode)
2025
Mashin Creator WataruTV
as Mr. Liar (voice) (2 episodes)
2025
I Have a Crush at WorkTV
as Pastor (voice) (1 episode)
2024
Nintama Rantarō: Invincible Master of the Dokutake Ninja
as Hansuke Doi (voice)
2024
Good Bye, Dragon LifeTV
as Dio (voice) (3 episodes)
2024
Ranma1/2TV
as Mousse (voice) (4 episodes)
2024
I Parry EverythingTV
as Carew (voice) (12 episodes)
2024
Kaiju No. 8TV
as Kaiju No. 11 (voice) (1 episode)
2023
The Birth of Kitaro: The Mystery of GeGeGe
as Kitarou's Father (voice)
2023
OnimushaTV
as Kojiro Sasaki (voice) (8 episodes)
2023
PLUTOTV
as Pluto (voice) (3 episodes), as Sahad (voice) (1 episode)
2023
The Most Heretical Last Boss Queen: From Villainess to SaviorTV
as Clark Darwin (voice) (12 episodes)
2023
Rurouni KenshinTV
as Narration (voice) (21 episodes)
2023
Black Clover: Sword of the Wizard King
as Conrad Leto (voice)
2023
HIGH CARDTV
as Norman Kingstat (voice) (12 episodes)
2022
Demon Slayer: Kimetsu no Yaiba - Asakusa Arc
as Muzan Kibutsuji (voice)
2022
Avataro Sentai Donbrothers meets Kamen Rider Den-O: Aim for it! The Don-OTV
as Momotaros (voice) (3 episodes)
2021
My Hero Academia: World Heroes' Mission
as Eddie Soul (voice)
2021
Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Chronicles
as Momotaros (voice) / Kamen Rider Den-O (voice)