Toshihiko Seki
Known for Acting · 238 credits
- Born
- 1962-06-11 (age 63)
- Place of birth
- Sendai, Japon
- Also known as
- せき としひこ · 关俊彦 · 関 俊彦
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.
Known For
Kamen Rider
1971
as Kamen Rider Den-O (voice) / Momotaros (voice)
Demon Slayer: Kimetsu no Yaiba Infinity Castle
2025
as Muzan Kibutsuji (voice)
Naruto
2002
as Iruka Umino (voice)
Bleach
2004
as Aaroniero Arruruerie (voice)
Hunter x Hunter
2011
as Wing (voice)
Naruto Shippūden
2007
as Iruka Umino (voice)
TV Shows (126)
Kamen Rider
1971
as Kamen Rider Den-O (voice) / Momotaros (voice)
Naruto
2002
as Iruka Umino (voice)
Bleach
2004
as Aaroniero Arruruerie (voice)
Hunter x Hunter
2011
as Wing (voice)
Naruto Shippūden
2007
as Iruka Umino (voice)
Ranma ½
1989
as Mousse (voice)
Mobile Suit Gundam SEED
2002
as Rau Le Creuset (voice) / Rey Za Burrel (voice)
Mob Psycho 100
2016
as Morizo Ebihara (voice) / Musashi Goda (voice)
Rurouni Kenshin
2023
as Narration (voice)
Ninja Boy Rantaro
1993
as Hansuke Doi
The Misfit of Demon King Academy
2020
as Ahide Alobo Agatze (voice)
MÄR: Märchen Awakens Romance
2005
as Danna Toramizu
Golden Kamuy
2018
as Kazuo Henmi (voice)
Kaiju No. 8
2024
as Kaiju No. 11 (voice)
Sekirei
2008
as Hiroto Minaka
A Certain Magical Index
2008
as Aleister Crowley (voice)
Ranma1/2
2024
as Mousse (voice)
Saiyuki
2000
as Konzen Douji (voice) / Genjo Sanzo (voice)
Saint Seiya: The Hades Chapter
2002
as Milo (voice)
Demon Slayer: Kimetsu no Yaiba
2019
as Muzan Kibutsuji (voice)
Nadia: The Secret of Blue Water
1990
as Fejto (voice)
SANDA
2025
as Hifumi Ōshibu (voice)
Star☆Twinkle PreCure
2019
as Toto Hagoromo (voice)
Space Dandy
2014
as Public Prosecutor (voice)
Guilty Crown
2011
as Kurosu Ouma (voice)
Higurashi: When They Cry
2006
as Kyousuke Irie (voice)
Higurashi: When They Cry - NEW
2020
as Kyousuke Irie (voice)
Samurai Champloo
2004
as Yamane (voice)
PLUTO
2023
as Sahad (voice) / Pluto (voice)
Hakkenden: Legend of the Dog Warriors
1990
as Shino Inuzuka (voice)
TRIGUN
1998
as Legato Bluesummers (voice)
Yawara!
1989
as Matsuda / Eiji (voice)
Glitter Force
2012
as Hiroshi Hoshizora
Mobile Suit Gundam Wing
1995
as Duo Maxwell (voice)
The Most Heretical Last Boss Queen: From Villainess to Savior
2023
as Clark Darwin (voice)
The Ryuo's Work is Never Done!
2018
as Kiyotaki Kousuke (voice)
Black Jack
1993
as Tokio Umetani (voice)
Showa Genroku Rakugo Shinju
2016
as Eisuke Higuchi (voice)
To Be Hero
2016
as Chinese Tohoku Muffler (voice)
Paranoia Agent
2004
as Mitsuhiro Maniwa (voice)
The Irresponsible Captain Tylor
1993
as Ru Baraba Dom
SAINT SEIYA: Knights of the Zodiac
2019
as Scorpio Milo (voice)
Future GPX Cyber Formula
1991
as Jotaro Kaga
The Irresponsible Captain Tylor OVA
1994
as Dom (voice)
My Ribdiculous Reincarnation
2026
I Have a Crush at Work
2025
as Pastor (voice)
Blade of the Immortal
2008
as Souri (voice)
My-Hime
2004
as Reito Kanzaki (voice)
Cross Ange: Rondo of Angels and Dragons
2014
as Embryo (voice)
HIGH CARD
2023
as Norman Kingstat (voice)
Katanagatari
2010
as Umigame Maniwa (voice)
Sarazanmai
2019
as Yuri Kamome
Mashin Creator Wataru
2025
as Mr. Liar (voice)
I Parry Everything
2024
as Carew (voice)
B'T X
1996
as Quatro (voice)
The Legend of Zorro
1996
as Don Diego de la Vega / Zorro
Madö King Granzört
1989
as Grunwald
Saint Seiya: Soul of Gold
2015
as Scorpio Milo (voice)
Requiem from the Darkness
2003
as Momosuke Yamaoka (voice)
Gingitsune: Messenger Fox of the Gods
2013
as Tatsuo Saeki (voice)
Movies (112)
Demon Slayer: Kimetsu no Yaiba Infinity Castle
2025
as Muzan Kibutsuji (voice)
Castle in the Sky
1986
as Additional Voices (voice)
Black Clover: Sword of the Wizard King
2023
as Conrad Leto (voice)
Detective Conan: Quarter of Silence
2011
as Shogo Hikawa (voice)
Ninja Scroll
1993
as Yurimaru (voice)
Road to Ninja: Naruto the Movie
2012
as Iruka Umino (voice)
My Hero Academia: World Heroes' Mission
2021
as Eddie Soul (voice)
Hunter x Hunter: The Last Mission
2013
as Wing (voice)
Mazinger Z: Infinity
2017
as Tetsuya Tsurugi (voice)
Ocean Waves
1993
as Yutaka Matsuno (voice)
Demon Slayer: Kimetsu no Yaiba - Sibling's Bond
2019
as Muzan Kibutsuji (voice)
X: The Movie
1996
as Shougo
Kamen Rider Heisei Generations Forever
2018
as Momotaros / Kamen Rider Den-O Sword Form (voice)
Ranma 1/2 the Movie 2: Nihao My Concubine
1992
as Mousse (voice)
Balthus: Tia's Radiance
1988
as Eud (voice)
Kamen Rider × Super Sentai: Ultra Super Hero Wars
2017
as Momotaros - Kamen Rider Den-O Sword Form (voice)
Kamen Rider × Super Sentai: Super Hero Wars
2012
as Momotaros - Kamen Rider Den-O Sword Form (voice)
The Birth of Kitaro: The Mystery of GeGeGe
2023
as Kitarou's Father (voice)
Gundam Wing: The Endless Waltz
1998
as Duo Maxwell (voice)
Kamen Rider Den-O & Kiva: Climax Deka
2008
as Momotaros (voice)
Kamen Rider Kiva: King of the Castle in the Demon World
2008
as Penetentiary Officer Sanjo
Kamen Rider Decade: All Riders vs. Dai-Shocker
2009
as Momotaros / Kamen Rider Den-O (voice)
Ranma 1/2 the Movie: Big Trouble in Nekonron, China
1991
as Mousse (voice)
Kamen Rider × Kamen Rider W & Decade: Movie War 2010
2009
as Kamen Rider Den-O (voice)
Goddamn
1990
as Hans Schultz
Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Chronicles
2021
as Momotaros (voice) / Kamen Rider Den-O (voice)
Kamen Rider Den-O The Movie: I'm Born!
2007
as Momotaros (voice)
Demon Slayer: Kimetsu no Yaiba - Asakusa Arc
2022
as Muzan Kibutsuji (voice)
Saiyuki: Requiem
2001
as Genjo Sanzo (voice)
Super Kamen Rider Den-O & Decade NEO Generations: The Onigashima Warship
2009
as Momotaros (voice)
Nadia: The Secret of Blue Water - Nautilus Story II
1991
as Fate (voice)
Twilight of the Dark Master
1997
as Shijo Tsunami (voice)
Nintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck!
2011
as Hansuke Doi (voice)
Naruto OVA 12: The Day Naruto Became Hokage
2016
as Iruka Umino (voice)
Sunlight All Around! Ka - su - mi: You Were in My Dreams
1988
as Reporter B (voice)
Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai
2014
as Kamen Rider Den-O Sword Form (voice)
Farewell Kamen Rider Den-O: Final Countdown
2008
as Momotaros (voice)
OOO, Den-O, All Riders: Let's Go Kamen Riders
2011
as Momotaros / Kamen Rider Den-O Sword Form (voice)
Bio Hunter
1995
as Komada
Angel Cop
1989
as Tachihara (voice)
Cinderella Express
1989
as Yuji Shimano
Kamen Rider Den-O: Final Trilogy Special Edition
2008
as Momotaros (voice)
Ultraman Super Fighter Legend
1996
as Ultraseven / Ultraman Leo (voice)
Nintama Rantarō: Invincible Master of the Dokutake Ninja
2024
as Hansuke Doi (voice)
Wild 7: Biker Knights
1994
as Dairoku Hiba
Campus Special Investigator Hikaruon
1987
as Hikaru Shihodo / Hikaruon (voice)
Moonlight Pierce
1991
as Hiroshi Takama (voice)
Super Kamen Rider Den-O Trilogy - Episode Yellow: Treasure de End Pirates
2010
as Momotaros (voice)
Call Me Tonight
1986
as Hayata (voice)
Violinist of Hamelin: The Movie
1996
as Raiel (voice)
Kamen Rider Den-O: Final Stage
2007
as Momotaros
Mobile Suit Gundam: The Origin II - Artesia's Sorrow
2015
as Char Aznable (voice)
Saraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!-
2017
as Momotaros
Nadia: The Secret of Blue Water - The Motion Picture
1991
as Falt (voice)
Higurashi: When They Cry - Outbreak
2013
as Kyousuke Irie (voice)
Yuukan Club
1991
Hades Project: Zeorymer Separation
1988
as Masaki Kihara (voice) / Masato Akitsu (voice)
Calico Cat Holmes and the Lord of the Haunted Castle
1992
as Yoshitaro Katayama (voice)
Super Kamen Rider Den-O Trilogy - Episode Blue: The Dispatched Imagin is Newtral
2010
as Momotaros (voice)
Kamen Rider Den-O: The Birth of Pretty Den-O!
2020
as Momotaros (voice)
Imagin Anime: Momotaros Forever!/Imajin Terminal Station
2008
as Momotaros (voice)
The Samurai
1987
as Takeshi Chimatsuri
Super Kamen Rider Den-O Trilogy - Episode Red: Zero's Star Twinkle
2010
as Momotaros (voice)
Hades Project: Zeorymer Extinction
1989
as Masato Akitsu / Masaki Kihara (voice)
Genocyber
1994
as Sakomizu (voice)
OOO, Den-O, All Riders: Let's Go Kamen Riders: ~Let's Look! Only Your 48 Riders~
2011
as Momotaros (voice)
Baby Felix & Friends
2000
as Felix The Cat
Kiss Me on the Apple of My Eye
1993
as Naoto (voice)
Demon Hunter Makaryūdo
1989
as Shou Kurogane (voice)
Inferious Interplanetary War Chronicle - Condition Green
1991
as Soo Laform (voice)
The Weathering Continent
1992
as Tieh (voice)
TO-Y
1987
as Shouji (voice)
Love Wedge 1
1992
as Riki (voice)
Ryokunohara Labyrinth - Sparkling Phantom
1990
as Hiroki Imashi
Zillion: Burning Night
1988
as J.J. (voice)
Maryuu Senki
1987
Reign: The Conqueror Movie
2000
as Alexander
Marina the Manga Artist Goes to Camelot
1990
as Bijomaru Shizuka (voice)
Trusty Ginjiro
1991
as Hideki Mitsui (voice)
Kaze wo Nuke!
1988
Love Wedge 2
1994
as Riki (voice)
Yawara! Go Get 'Em, Wimpy Kids!!
1992
as (voice)
Scarlet Demon
1989
Kamen Rider Den-O: Singing, Dancing, Great Training!!
2007
as Momotaros (voice)
Suikoden Demon Century
1993
as Takateru Suga (voice)
Dragon Century
1988
as Carmine (voice)
Animation Store Manager
2002
as Ryuu Raiba (voice)
Crayon Shin-chan Midsummer Night: I Have Arrived! The Storm is Called Den-O vs. Shin-O! 60 Minute Special!!
2007
as Momotaros (voice)
Momotaros' King of the Crimson Castle
2008
as Momotaros (voice)
Download: Devil's Circuit
1992
as Sid (voice)
Heart-Coloured Killer Ticket
1990
as Chuta Misora (voice)
Oruorane the Cat Player
1992
as The Cellist
I'm Not an Angel!
1994
as Bunta Kouno (voice)
The End of the Century Darling
1996
as Todorokki Kouhei (voice)
Yawara! Atlanta Special
1996
Kamen Rider Kiva & Den-O: DenLiner, Into Space!
2009
as Momotaros (voice)
Handsome Girl
1991
as Ichiya Kumagai (voice)
Midoriyama High School, Koshien Edition (Movie)
1990
Momotaros' Summer Vacation
2007
as Momotaros (voice)
Hisashi Eguchi's Kotobuki Goro Show
1991
as Piston Akagi (voice)
Kamen Rider × Kamen Rider × Kamen Rider The Movie Cho-Den-O Trilogy Movie Released Memorial Special Stage: Imagin Super Climax Tour 2010
2010
Saiyuki Interactive
2002
10th Anniversary Project: Masked Rider LIVE & SHOW
2009
as Kamen Rider Den-O Sword Form (voice)
Kamen Rider Decade: Final Stage
2010
as Momotaros / Kamen Rider Den-O (Sword Form)
Milky Passion: Dougenzaka - The Castle of Love
1990
as Ootsuki (voice)
TOKYO CITY Melhen 2
1990
Saraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!-
2009
as Momotaros (voice)
Dorami-chan: A Blue Straw Hat
1994
as Crow (voice)
Untitled Super Space Sheriff Gavan Infinity Summer Movie
2026
as Cosmo Gavarion System Voice / Gavarion Trigger System Voice
Paranoia Agent: Part 1
2004
as まにわ みつひろ
Super Space Sheriff Gavan Infinity: Jo-Chaku Course
2026
as Gavarion Trigger System Voice (voice)
Chimera: Angel of Death
1997
as Ron
About 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 Bluesu… With 238 credits spanning from 1971 to 2026, Toshihiko Seki has appeared in 112 films and 126 TV shows.
Fans searching for Toshihiko Seki movies, Toshihiko Seki filmography, or the latest projects starring Toshihiko Seki can stream many of these titles on HinFlix, free and in HD, with no subscription required.
Most Popular Toshihiko Seki Movies
- Demon Slayer: Kimetsu no Yaiba Infinity Castle (2025) — as Muzan Kibutsuji (voice)
- Castle in the Sky (1986) — as Additional Voices (voice)
- Black Clover: Sword of the Wizard King (2023) — as Conrad Leto (voice)
- Detective Conan: Quarter of Silence (2011) — as Shogo Hikawa (voice)
- Ninja Scroll (1993) — as Yurimaru (voice)
Where to Watch Toshihiko Seki Films
Most Toshihiko Seki movies and series are available to stream on HinFlix in full HD, completely free and without signup. Browse the complete filmography above to jump directly to any title. For more films and the latest web series featuring Toshihiko Seki, check our movies catalogue and browse page.