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
Acting240
movieChō Uchū Keiji Gyaban Infiniti Taiyō ga Naita Hi
2026
Cosmo Gavarion System Voice / Gavarion Trigger System Voice
movieSuper Space Sheriff Gavan Infinity: Jo-Chaku Course
2026
Gavarion Trigger System Voice (voice)
tvPROJECT R.E.D.
2026
GavarionTrigger / CosmoGavarion (voice)
tvSANDA
2025
Hifumi Ōshibu (voice)
movieDemon Slayer: Kimetsu no Yaiba Infinity Castle
2025
Muzan Kibutsuji (voice)
tvU Takes Terra
2025
Chongyue (Voice)
tvMashin Creator Wataru
2025
Mr. Liar (voice)
tvI Have a Crush at Work
2025
Pastor (voice)
movieNintama Rantarō: Invincible Master of the Dokutake Ninja
2024
Hansuke Doi (voice)
tvGood Bye, Dragon Life
2024
Dio (voice)
tvRanma1/2
2024
Mousse (voice)
tvI Parry Everything
2024
Carew (voice)
tvKaiju No. 8
2024
Kaiju No. 11 (voice)
movieThe Birth of Kitaro: The Mystery of GeGeGe
2023
Kitarou's Father (voice)
tvOnimusha
2023
Kojiro Sasaki (voice)
tvPLUTO
2023
Sahad (voice) / Pluto (voice)
tvThe Most Heretical Last Boss Queen: From Villainess to Savior
2023
Clark Darwin (voice)
tvRurouni Kenshin
2023
Narration (voice)
movieBlack Clover: Sword of the Wizard King
2023
Conrad Leto (voice)
tvHIGH CARD
2023
Norman Kingstat (voice)
movieDemon Slayer: Kimetsu no Yaiba - Asakusa Arc
2022
Muzan Kibutsuji (voice)
movieMy Hero Academia: World Heroes' Mission
2021
Eddie Soul (voice)
movieKamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Chronicles
2021
Momotaros (voice) / Kamen Rider Den-O (voice)
tvHigurashi: When They Cry - NEW
2020
Kyousuke Irie (voice)
movieKamen Rider Den-O: The Birth of Pretty Den-O!
2020
Momotaros (voice)
tvThe Misfit of Demon King Academy
2020
Ahide Alobo Agatze (voice)
tvAscendance of a Bookworm
2019
Eustachius (voice)
tvSAINT SEIYA: Knights of the Zodiac
2019
Scorpio Milo (voice)
tvSarazanmai
2019
Yuri Kamome
tvDemon Slayer: Kimetsu no Yaiba
2019
Muzan Kibutsuji (voice)
movieDemon Slayer: Kimetsu no Yaiba - Sibling's Bond
2019
Muzan Kibutsuji (voice)
tvStar☆Twinkle PreCure
2019
Toto Hagoromo (voice)
movieKamen Rider Heisei Generations Forever
2018
Momotaros / Kamen Rider Den-O Sword Form (voice)
tvSaint Seiya: Saintia Sho
2018
Scorpio Milo (voice)
tvGolden Kamuy
2018
Kazuo Henmi (voice)
tvSWORD GAI: The Animation
2018
Miura Takuma
tvThe Ryuo's Work is Never Done!
2018
Kiyotaki Kousuke (voice)
movieMazinger Z: Infinity
2017
Tetsuya Tsurugi (voice)
movieSaraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!-
2017
Momotaros
tvTHE REFLECTION
2017
Michael Holden (voice)
tvThe Laughing Salesman NEW
2017
Shisao Kihara(Story2)
movieKamen Rider × Super Sentai: Ultra Super Hero Wars
2017
Momotaros - Kamen Rider Den-O Sword Form (voice)
tvTo Be Hero
2016
Chinese Tohoku Muffler (voice)
tvMob Psycho 100
2016
Morizo Ebihara (voice) / Musashi Goda (voice)
movieNaruto OVA 12: The Day Naruto Became Hokage
2016
Iruka Umino (voice)
tvShowa Genroku Rakugo Shinju
2016
Eisuke Higuchi (voice)
movieMobile Suit Gundam: The Origin II - Artesia's Sorrow
2015
Char Aznable (voice)
tvSaint Seiya: Soul of Gold
2015
Scorpio Milo (voice)
tvCross Ange: Rondo of Angels and Dragons
2014
Embryo (voice)
movieHeisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai
2014
Kamen Rider Den-O Sword Form (voice)
tvSpace Dandy
2014
Public Prosecutor (voice)
movieHunter x Hunter: The Last Mission
2013
Wing (voice)
tvGingitsune: Messenger Fox of the Gods
2013
Tatsuo Saeki (voice)
tv声優戦隊ボイストーム7
2013
(voice)
movieHigurashi: When They Cry - Outbreak
2013
Kyousuke Irie (voice)
tvTriple Combination: Transformers Go!
2013
Gekisōmaru (voice)
movieRoad to Ninja: Naruto the Movie
2012
Iruka Umino (voice)
movieKamen Rider × Super Sentai: Super Hero Wars
2012
Momotaros - Kamen Rider Den-O Sword Form (voice)
tvGlitter Force
2012
Hiroshi Hoshizora
tvGuilty Crown
2011
Kurosu Ouma (voice)
tvHunter x Hunter
2011
Wing (voice)
movieDetective Conan: Quarter of Silence
2011
Shogo Hikawa (voice)
movieOOO, Den-O, All Riders: Let's Go Kamen Riders
2011
Momotaros / Kamen Rider Den-O Sword Form (voice)
tvSaiyuki Gaiden
2011
Konzen Dōji (voice)
movieNintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck!
2011
Hansuke Doi (voice)
movieOOO, Den-O, All Riders: Let's Go Kamen Riders: ~Let's Look! Only Your 48 Riders~
2011
Momotaros (voice)
tvPsychic Detective Yakumo
2010
Isshin Saitō
movieSuper Kamen Rider Den-O Trilogy - Episode Blue: The Dispatched Imagin is Newtral
2010
Momotaros (voice)
tvKatanagatari
2010
Umigame Maniwa (voice)
movieKamen Rider Decade: Final Stage
2010
Momotaros / Kamen Rider Den-O (Sword Form)
movieKamen Rider × Kamen Rider W & Decade: Movie War 2010
2009
Kamen Rider Den-O (voice)
movie10th Anniversary Project: Masked Rider LIVE & SHOW
2009
Kamen Rider Den-O Sword Form (voice)
movieKamen Rider Decade: All Riders vs. Dai-Shocker
2009
Momotaros / Kamen Rider Den-O (voice)
tvDogs: Bullets & Carnage
2009
Ernst Rammsteiner
movieSaraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!-
2009
Momotaros (voice)
movieKamen Rider Kiva & Den-O: DenLiner, Into Space!
2009
Momotaros (voice)
movieImagin Anime: Momotaros Forever!/Imajin Terminal Station
2008
Momotaros (voice)
tvA Certain Magical Index
2008
Aleister Crowley (voice)
movieFarewell Kamen Rider Den-O: Final Countdown
2008
Momotaros (voice)
movieKamen Rider Kiva: King of the Castle in the Demon World
2008
Penetentiary Officer Sanjo
movieMomotaros' King of the Crimson Castle
2008
Momotaros (voice)
movieKamen Rider Den-O: Final Trilogy Special Edition
2008
Momotaros (voice)
tvMomotaros' King of the Crimson Castle
2008
Momotaros (voice)
tvBlade of the Immortal
2008
Souri (voice)
tvSekirei
2008
Hiroto Minaka
tvKamen Rider Den-O: Imagin Anime
2008
Momotaros (voice)
movieKamen Rider Den-O & Kiva: Climax Deka
2008
Momotaros (voice)
movieKamen Rider Den-O: Singing, Dancing, Great Training!!
2007
Momotaros (voice)
movieKamen Rider Den-O The Movie: I'm Born!
2007
Momotaros (voice)
movieCrayon Shin-chan Midsummer Night: I Have Arrived! The Storm is Called Den-O vs. Shin-O! 60 Minute Special!!
2007
Momotaros (voice)
movieMomotaros' Summer Vacation
2007
Momotaros (voice)
tvSaiyuki Reload: Burial
2007
Genjō Sanzō (voice)
tvNaruto Shippūden
2007
Iruka Umino (voice)
tvKamen Rider Den-O
2007
Momotaros (voice)
tvHigurashi: When They Cry
2006
Kyousuke Irie (voice)
tvMy-Otome
2005
Rad (voice)
tvMÄR: Märchen Awakens Romance
2005
Danna Toramizu
tvGin'yuu Mokushiroku Meine Liebe
2004
Ludwig Herzog von Mohn nahe Liechtenstein (voice)
tvBleach
2004
Aaroniero Arruruerie (voice)
tvMy-Hime
2004
Reito Kanzaki (voice)
tvSamurai Champloo
2004
Yamane (voice)
tvParanoia Agent
2004
Mitsuhiro Maniwa (voice)
movieParanoia Agent: Part 1
2004
まにわ みつひろ
tvRequiem from the Darkness
2003
Momosuke Yamaoka (voice)
tvSaint Seiya: The Hades Chapter
2002
Milo (voice)
tvMobile Suit Gundam SEED
2002
Rau Le Creuset (voice) / Rey Za Burrel (voice)
tvNaruto
2002
Iruka Umino (voice)
movieAnimation Store Manager
2002
Ryuu Raiba (voice)
tvAngelique: Twin Collection
2002
Luva (voice)
tvMirage of Blaze
2002
Takaya Ohgi (voice)
movieSaiyuki: Requiem
2001
Genjo Sanzo (voice)
movieReign: The Conqueror Movie
2000
Alexander
tvDescendants of Darkness
2000
Yutaka Watari (voice)
tvSaiyuki
2000
Genjo Sanzo (voice) / Konzen Douji (voice)
movieBaby Felix & Friends
2000
Felix The Cat
tvReign: The Conqueror
1999
Alexander (voice)
tvPet Shop of Horrors
1999
Count D (voice)
tvBビーダマン爆外伝V
1999
Kurobon
movieGundam Wing: The Endless Waltz
1998
Duo Maxwell (voice)
tvTRIGUN
1998
Legato Bluesummers (voice)
tvOutlaw Star
1998
Fred (voice)
movieTwilight of the Dark Master
1997
Shijo Tsunami (voice)
tvDragoon
1997
Rain Keeves Fearudo (voice)
tvHyper Police
1997
Sakunoshin Chikura
movieUltraman Super Fighter Legend
1996
Ultraseven / Ultraman Leo (voice)
movieX: The Movie
1996
Shougo
movieViolinist of Hamelin: The Movie
1996
Raiel (voice)
tvB'T X
1996
Quatro (voice)
tvThe Legend of Zorro
1996
Don Diego de la Vega / Zorro
tvSpecial Duty Combat Unit Shinesman
1996
Shujin Seki (voice)
movieThe End of the Century Darling
1996
Todorokki Kouhei (voice)
movieBio Hunter
1995
Komada
tvMobile Suit Gundam Wing
1995
Duo Maxwell (voice)
movieWild 7: Biker Knights
1994
Dairoku Hiba
tvWild 7
1994
Dairoku Hiba
tvThe Irresponsible Captain Tylor OVA
1994
Dom (voice)
movieI'm Not an Angel!
1994
Bunta Kouno (voice)
movieLove Wedge 2
1994
Riki (voice)
movieDorami-chan: A Blue Straw Hat
1994
Crow (voice)
movieGenocyber
1994
Sakomizu (voice)
tvNatsuki Crisis
1994
Kyōtarō Himuro
tvPlease Save My Earth
1993
Mikuro Yakushimaru (voice)
tvBlack Jack
1993
Tokio Umetani (voice)
tvAoki Densetsu Shoot!
1993
Akihiko Himuro (voice)
movieOcean Waves
1993
Yutaka Matsuno (voice)
movieSuikoden Demon Century
1993
Takateru Suga (voice)
movieKiss Me on the Apple of My Eye
1993
Naoto (voice)
movieNinja Scroll
1993
Yurimaru (voice)
tvNinja Boy Rantaro
1993
Hansuke Doi
tvThe Irresponsible Captain Tylor
1993
Ru Baraba Dom
movieDownload: Devil's Circuit
1992
Sid (voice)
movieOruorane the Cat Player
1992
The Cellist
movieLove Wedge 1
1992
Riki (voice)
tvAi no Kusabi
1992
Riki (voice)
movieRanma 1/2 the Movie 2: Nihao My Concubine
1992
Mousse (voice)
tvPrincess Army: Wedding Combat
1992
Yuuya Hashiba
movieCalico Cat Holmes and the Lord of the Haunted Castle
1992
Yoshitaro Katayama (voice)
movieThe Weathering Continent
1992
Tieh (voice)
movieMoonlight Pierce
1991
Hiroshi Takama (voice)
movieInferious Interplanetary War Chronicle - Condition Green
1991
Soo Laform (voice)
tvHere Is Greenwood
1991
Shinobu Tezuka (voice)
movieHandsome Girl
1991
Ichiya Kumagai (voice)
tvIzumo
1991
Izumo (voice)
movieTrusty Ginjiro
1991
Hideki Mitsui (voice)
movieHisashi Eguchi's Kotobuki Goro Show
1991
Piston Akagi (voice)
tvBlazing Transfer Student
1991
Noboru Takizawa (voice)
tvFuture GPX Cyber Formula
1991
Jotaro Kaga
tvThe Hakkenden: Legend of the Dog Warriors
1990
Shino Inuzuka (voice)
movieMarina the Manga Artist Goes to Camelot
1990
Bijomaru Shizuka (voice)
movieMilky Passion: Dougenzaka - The Castle of Love
1990
Ootsuki (voice)
movieGoddamn
1990
Hans Schultz
tvGoddamn
1990
Hans Schultz
tvNadia: The Secret of Blue Water
1990
Fejto (voice)
movieHeart-Coloured Killer Ticket
1990
Chuta Misora (voice)
movieRyokunohara Labyrinth - Sparkling Phantom
1990
Hiroki Imashi
movieDemon Hunter Makaryūdo
1989
Shou Kurogane (voice)
tvYawara!
1989
Matsuda / Eiji (voice)
tvDarkness of the Sea, Shadow of the Moon
1989
Katsuyuki Touma (voice)
movieAngel Cop
1989
Tachihara (voice)
movieCinderella Express
1989
Yuji Shimano
tvRanma ½
1989
Mousse (voice)
tvMadö King Granzört
1989
Grunwald
tvShurato
1989
Shurato
movieHades Project: Zeorymer Extinction
1989
Masato Akitsu / Masaki Kihara (voice)
movieHades Project: Zeorymer Separation
1988
Masato Akitsu (voice) / Masaki Kihara (voice)
tvHades Project Zeorymer
1988
(voice)
tvArmor Hunter Merowlink
1988
PFC Cepres
movieDragon Century
1988
Carmine (voice)
tvDragon Century
1988
Carmine
movieSunlight All Around! Ka - su - mi: You Were in My Dreams
1988
Reporter B (voice)
movieZillion: Burning Night
1988
J.J. (voice)
tvSpirit Warrior
1988
Kujaku (voice)
movieBalthus: Tia's Radiance
1988
Eud (voice)
tvF
1988
Gunma Akagi (voice)
movieThe Samurai
1987
Takeshi Chimatsuri
movieTO-Y
1987
Shouji (voice)
tvEvil Dragon War Chronicles
1987
錦繍 (voice)
movieCampus Special Investigator Hikaruon
1987
Hikaru Shihodo / Hikaruon (voice)
movieCastle in the Sky
1986
Additional Voices (voice)
movieCall Me Tonight
1986
Hayata (voice)
tvMagical Emi, the Magic Star
1985
Customer A (voice)
tvKamen Rider
1971
Kamen Rider Den-O (voice) / Momotaros (voice)
Sound3
movieSuper Kamen Rider Den-O & Decade NEO Generations: The Onigashima Warship
2009
Theme Song Performance
movieKamen Rider Den-O & Kiva: Climax Deka
2008
Theme Song Performance
tvAngelique: Twin Collection
2002
Theme Song Performance