Toshihiko Seki
Born: 1962-06-11 in Sendai, Miyagi, Japan
Known For: Acting
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.
Filmography
2025
- Demon Slayer: Kimetsu no Yaiba Infinity Castle as Muzan Kibutsuji (voice)
- SANDA as Hifumi Ōshibu (voice)
- I Have a Crush at Work as Pastor (voice)
- Mashin Creator Wataru as Mr. Liar (voice)
- U Takes Terra as Chongyue (Voice)
2024
- Kaiju No. 8 as Kaiju No. 11 (voice)
- Ranma1/2 as Mousse (voice)
- I Parry Everything as Carew (voice)
- Good Bye, Dragon Life as Dio (voice)
- Nintama Rantarō: Invincible Master of the Dokutake Ninja as Hansuke Doi (voice)
2023
- Rurouni Kenshin as Narration (voice)
- PLUTO as Sahad (voice)
- Black Clover: Sword of the Wizard King as Conrad Leto (voice)
- The Most Heretical Last Boss Queen: From Villainess to Savior as Clark Darwin (voice)
- HIGH CARD as Norman Kingstat (voice)
- The Birth of Kitaro: The Mystery of GeGeGe as Kitarou's Father (voice)
- Onimusha as Kojiro Sasaki (voice)
2022
- Demon Slayer: Kimetsu no Yaiba - Asakusa Arc as Muzan Kibutsuji (voice)
- Avataro Sentai Donbrothers meets Kamen Rider Den-O: Aim for it! The Don-O as Momotaros (voice)
2021
- My Hero Academia: World Heroes' Mission as Eddie Soul (voice)
- Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Chronicles as Momotaros (voice) / Kamen Rider Den-O (voice)
2020
- The Misfit of Demon King Academy as Ahide Alobo Agatze (voice)
- Higurashi: When They Cry - NEW as Kyousuke Irie (voice)
- Kamen Rider Den-O: The Birth of Pretty Den-O! as Momotaros (voice)
2019
- Demon Slayer: Kimetsu no Yaiba as Muzan Kibutsuji (voice)
- Demon Slayer: Kimetsu no Yaiba - Sibling's Bond as Muzan Kibutsuji (voice)
- SAINT SEIYA: Knights of the Zodiac as Scorpio Milo (voice)
- Star☆Twinkle PreCure as Toto Hagoromo (voice)
- Sarazanmai as Yuri Kamome
2018
- Golden Kamuy as Kazuo Henmi (voice)
- Kamen Rider Heisei Generations Forever as Momotaros / Kamen Rider Den-O Sword Form (voice)
- Saint Seiya: Saintia Sho as Scorpio Milo (voice)
- SWORD GAI: The Animation as Miura Takuma
- The Ryuo's Work is Never Done! as Kiyotaki Kousuke (voice)
2017
- Kamen Rider × Super Sentai: Ultra Super Hero Wars as Momotaros - Kamen Rider Den-O Sword Form (voice)
- Mazinger Z: Infinity as Tetsuya Tsurugi (voice)
- The Laughing Salesman NEW as Shisao Kihara(Story2)
- Saraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!- as Momotaros
- THE REFLECTION as Michael Holden (voice)
2016
- Mob Psycho 100 as Morizo Ebihara (voice)
- Showa Genroku Rakugo Shinju as Eisuke Higuchi (voice)
- To Be Hero as Chinese Tohoku Muffler (voice)
- Naruto OVA 13: The Day Naruto Became Hokage as Iruka Umino (voice)
2015
- Saint Seiya: Soul of Gold as Scorpio Milo (voice)
- Mobile Suit Gundam: The Origin II - Artesia's Sorrow as Char Aznable (voice)
2014
- Space Dandy as Public Prosecutor (voice)
- Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai as Kamen Rider Den-O Sword Form (voice)
- Cross Ange: Rondo of Angels and Dragons as Embryo (voice)
2013
- Hunter x Hunter: The Last Mission as Wing (voice)
- Higurashi: When They Cry - Outbreak as Kyousuke Irie (voice)
- Gingitsune: Messenger Fox of the Gods as Tatsuo Saeki (voice)
- Triple Combination: Transformers Go! as Gekisōmaru (voice)
- 声優戦隊ボイストーム7 as (voice)
2012
- Road to Ninja: Naruto the Movie as Iruka Umino (voice)
- Glitter Force as Hiroshi Hoshizora
- Kamen Rider × Super Sentai: Super Hero Wars as Momotaros - Kamen Rider Den-O Sword Form (voice)
2011
- Hunter x Hunter as Wing (voice)
- Guilty Crown as Kurosu Ouma (voice)
- Detective Conan: Quarter of Silence as Shogo Hikawa (voice)
- OOO, Den-O, All Riders: Let's Go Kamen Riders as Momotaros / Kamen Rider Den-O Sword Form (voice)
- Nintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck! as Hansuke Doi (voice)
- OOO, Den-O, All Riders: Let's Go Kamen Riders: ~Let's Look! Only Your 48 Riders~ as Momotaros (voice)
- Saiyuki Gaiden as Konzen Dōji (voice)
2010
- Katanagatari as Umigame Maniwa (voice)
- Kamen Rider Decade: Final Stage as Momotaros / Kamen Rider Den-O (Sword Form)
- Psychic Detective Yakumo as Isshin Saitō
- Super Kamen Rider Den-O Trilogy - Episode Yellow: Treasure de End Pirates as Momotaros (voice)
- Super Kamen Rider Den-O Trilogy - Episode Blue: The Dispatched Imagin is Newtral as Momotaros (voice)
- Super Kamen Rider Den-O Trilogy - Episode Red: Zero's Star Twinkle as Momotaros (voice)
- Kamen Rider × Kamen Rider × Kamen Rider The Movie Cho-Den-O Trilogy Movie Released Memorial Special Stage: Imagin Super Climax Tour 2010
2009
- Super Kamen Rider Den-O & Decade NEO Generations: The Onigashima Warship as Momotaros (voice)
- Kamen Rider Decade: All Riders vs. Dai-Shocker as Momotaros / Kamen Rider Den-O (voice)
- Kamen Rider Kiva & Den-O: DenLiner, Into Space! as Momotaros (voice)
- Dogs: Bullets & Carnage as Ernst Rammsteiner
- Kamen Rider × Kamen Rider W & Decade: Movie War 2010 as Kamen Rider Den-O (voice)
- 10th Anniversary Project: Masked Rider LIVE & SHOW as Kamen Rider Den-O Sword Form (voice)
- Cookin' Idol Ai! Mai! Main! as 柊修
- Saraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!- as Momotaros (voice)
2008
- A Certain Magical Index as Aleister Crowley (voice)
- Sekirei as Hiroto Minaka
- Farewell Kamen Rider Den-O: Final Countdown as Momotaros (voice)
- Kamen Rider Kiva: King of the Castle in the Demon World as Penetentiary Officer Sanjo
- Blade of the Immortal as Souri (voice)
- Kamen Rider Den-O & Kiva: Climax Deka as Momotaros (voice)
- Kamen Rider Den-O: Final Trilogy Special Edition as Momotaros (voice)
- Imagin Anime: Momotaros Forever!/Imajin Terminal Station as Momotaros (voice)
- Kamen Rider Den-O: Imagin Anime as Momotaros (voice)
- Momotaros' King of the Crimson Castle as Momotaros (voice)
- Momotaros' King of the Crimson Castle as Momotaros (voice)
2007
- Naruto Shippūden as Iruka Umino (voice)
- Kamen Rider Den-O The Movie: I'm Born! as Momotaros (voice)
- Momotaros' Summer Vacation as Momotaros (voice)
- Kamen Rider Den-O: Singing, Dancing, Great Training!! as Momotaros (voice)
- Kamen Rider Den-O as Momotaros (voice)
- Crayon Shin-chan Midsummer Night: I Have Arrived! The Storm is Called Den-O vs. Shin-O! 60 Minute Special!! as Momotaros (voice)
- Saiyuki Reload: Burial as Genjō Sanzō (voice)
- Kamen Rider Den-O: Final Stage as Momotaros
2006
- Higurashi: When They Cry as Kyousuke Irie (voice)
- Loving Angel Angelique as Luva
- Shonen Onmyouji
2005
- MÄR: Märchen Awakens Romance as Danna Toramizu
2004
- Bleach as Aaroniero Arruruerie (voice)
- Samurai Champloo as Yamane (voice)
- Paranoia Agent as Mitsuhiro Maniwa (voice)
- My-Hime as Reito Kanzaki (voice)
- Gin'yuu Mokushiroku Meine Liebe as Ludwig Herzog von Mohn nahe Liechtenstein (voice)
2003
- Requiem from the Darkness as Momosuke Yamaoka (voice)
2002
- Naruto as Iruka Umino (voice)
- Mobile Suit Gundam SEED as Rau Le Creuset (voice)
- Saint Seiya: The Hades Chapter as Milo (voice)
- Mirage of Blaze as Takaya Ohgi (voice)
- Saiyuki Interactive
- Animation Store Manager as Ryuu Raiba (voice)
- Angelique: Twin Collection as Luva (voice)
2001
- Saiyuki: Requiem as Genjo Sanzo (voice)
- Vampire Hunter D: Bloodlust as Grove Marcus (voice)
2000
- Saiyuki as Konzen Douji (voice)
- Baby Felix & Friends as Felix The Cat
- Reign: The Conqueror Movie as Alexander
- Descendants of Darkness as Yutaka Watari (voice)
1999
- Bビーダマン爆外伝V as Kurobon
- Reign: The Conqueror as Alexander (voice)
- Pet Shop of Horrors as Count D (voice)
- Harlock Saga - The Ring of the Nibelungs
1998
- TRIGUN as Legato Bluesummers (voice)
- Gundam Wing: The Endless Waltz as Duo Maxwell (voice)
- Outlaw Star as Fred (voice)
- Bomberman B-Daman Bakugaiden
- Nightwalker: The Midnight Detective as Bait
1997
- Twilight of the Dark Master as Shijo Tsunami (voice)
- Hyper Police as Sakunoshin Chikura
- Hakugei: Legend of the Moby Dick
- Dragoon as Rain Keeves Fearudo (voice)
- Chimera: Angel of Death as Ron
1996
- Yawara! Atlanta Special
- The Legend of Zorro as Don Diego de la Vega / Zorro
- B'T X as Quatro (voice)
- Ultraman Super Fighter Legend as Ultraseven / Ultraman Leo (voice)
- The End of the Century Darling as Todorokki Kouhei (voice)
- Violinist of Hamelin: The Movie as Raiel (voice)
- Special Duty Combat Unit Shinesman as Shujin Seki (voice)
- X: The Movie as Shougo
1995
- Mobile Suit Gundam Wing as Duo Maxwell (voice)
- Bio Hunter as Komada
- Udauda Yatteru Hima wa Nee! as (voice)
1994
- The Irresponsible Captain Tylor OVA as Dom (voice)
- Genocyber as Sakomizu (voice)
- Dorami-chan: A Blue Straw Hat as Crow (voice)
- I'm Not an Angel! as Bunta Kouno (voice)
- Wild 7: Biker Knights as Dairoku Hiba
- Love Wedge 2 as Riki (voice)
- Wild 7 as Dairoku Hiba
- Natsuki Crisis as Kyōtarō Himuro
1993
- Ninja Boy Rantaro as Hansuke Doi
- The Irresponsible Captain Tylor as Ru Baraba Dom
- Ninja Scroll as Yurimaru (voice)
- Ocean Waves as Yutaka Matsuno (voice)
- Black Jack as Tokio Umetani (voice)
- Aoki Densetsu Shoot! as Akihiko Himuro
- Suikoden Demon Century as Takateru Suga (voice)
- Kiss Me on the Apple of My Eye as Naoto (voice)
- Please Save My Earth as Mikuro Yakushimaru (voice)
1992
- Yawara! Go Get 'Em, Wimpy Kids!!
- Ranma 1/2 the Movie 2: Nihao My Concubine as Mousse (voice)
- Ai no Kusabi as Riki (voice)
- The Weathering Continent as Tieh (voice)
- Bastard!!
- Calico Cat Holmes and the Lord of the Haunted Castle as Yoshitaro Katayama (voice)
- Oruorane the Cat Player as The Cellist
- D-1 Devastator as 谷田辺了
- Princess Army: Wedding Combat as Yuuya Hashiba
- Download: Devil's Circuit as Sid (voice)
- Love Wedge 1 as Riki (voice)
1991
- Future GPX Cyber Formula as Jotaro Kaga
- Inferious Interplanetary War Chronicle - Condition Green as Soo Laform (voice)
- Ranma 1/2 the Movie: Big Trouble in Nekonron, China as Mousse (voice)
- Nadia: The Secret of Blue Water - The Motion Picture as Falt (voice)
- Hisashi Eguchi's Kotobuki Goro Show as Piston Akagi (voice)
- Nadia: The Secret of Blue Water - Nautilus Story II as Fate (voice)
- Handsome Girl as Ichiya Kumagai (voice)
- Here Is Greenwood as Shinobu Tezuka (voice)
- Moonlight Pierce as Hiroshi Takama (voice)
- Trusty Ginjiro as Hideki Mitsui (voice)
- Legend of Heavenly Sphere Shurato: The Secret Feud of Creation as Shurato
- Yuukan Club
- Blazing Transfer Student as Noboru Takizawa (voice)
- Detonator Orgun as Knock
- Izumo as Izumo (voice)
- Nyūin Bokki Monogatari Ojiji ni!
1990
- Nadia: The Secret of Blue Water as Fejto (voice)
- Hakkenden: Legend of the Dog Warriors as Shino Inuzuka (voice)
- Goddamn as Hans Schultz
- Ryokunohara Labyrinth - Sparkling Phantom as Hiroki Imashi
- Heart-Coloured Killer Ticket as Chuta Misora (voice)
- Marina the Manga Artist Goes to Camelot as Bijomaru Shizuka (voice)
- Milky Passion: Dougenzaka - The Castle of Love as Ootsuki (voice)
- Midoriyama High School, Koshien Edition (Movie)
- TOKYO CITY Melhen 2
- Goddamn as Hans Schultz
1989
- Ranma ½ as Mousse (voice)
- Madö King Granzört as Grunwald
- Shurato as Shurato
- Yawara! as Matsuda / Eiji (voice)
- Angel Cop as Tachihara (voice)
- Demon Hunter Makaryūdo as Shou Kurogane (voice)
- Dash! Yonkuro
- Cinderella Express as Yuji Shimano
- Hades Project: Zeorymer Extinction as Masato Akitsu / Masaki Kihara (voice)
- Scarlet Demon
- Nightsong of Splendor
- Darkness of the Sea, Shadow of the Moon as Katsuyuki Touma (voice)
- Star Cat Full House
1988
- Balthus: Tia's Radiance as Eud (voice)
- Zillion: Burning Night as J.J. (voice)
- F as Gunma Akagi (voice)
- Dragon Century as Carmine (voice)
- Hades Project: Zeorymer Separation as Masato Akitsu (voice)
- Armor Hunter Merowlink as PFC Cepres
- Hades Project Zeorymer as (voice)
- Kaze wo Nuke!
- Spirit Warrior as Kujaku (voice)
- Sunlight All Around! Ka - su - mi: You Were in My Dreams as Reporter B (voice)
- Dragon Century
1987
- Zillion as JJ
- Campus Special Investigator Hikaruon as Hikaru Shihodo / Hikaruon (voice)
- TO-Y as Shouji (voice)
- Maryuu Senki
- The Samurai as Takeshi Chimatsuri
- Evil Dragon War Chronicles as 錦繍 (voice)
1986
- Castle in the Sky as Additional Voices (voice)
- Call Me Tonight as Hayata (voice)
1985
- Magical Emi, the Magic Star as Customer A (voice)
1971
- Kamen Rider as Kamen Rider Den-O (voice)