Toshihiko Seki
Acting·June 11, 1962 — 64 years old·Sendai, Japon
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
Naruto Shippūden
2007·8.5
Demon Slayer: Kimetsu no Yaiba
2019·8.6
Naruto
2002·8.4
Castle in the Sky
1986·8.0
Bleach
2004·8.4
Hunter x Hunter
2011·8.7
Ranma ½
1989·8.6
Mob Psycho 100
2016·8.5
Road to Ninja: Naruto the Movie
2012·7.4
Ocean Waves
1993·6.4
Demon Slayer: Kimetsu no Yaiba Infinity Castle
2025·7.7
The Misfit of Demon King Academy
2020·8.4
Filmography · 240
2026Chō Uchū Keiji Gyaban Infiniti Taiyō ga Naita HiCosmo Gavarion System Voice / Gavarion Trigger System Voice2026My Ribdiculous ReincarnationTV2026Super Space Sheriff Gavan Infinity: Jo-Chaku CourseGavarion Trigger System Voice (voice)2026PROJECT R.E.D.TVGavarionTrigger / CosmoGavarion (voice)2025SANDATVHifumi Ōshibu (voice)2025Demon Slayer: Kimetsu no Yaiba Infinity CastleMuzan Kibutsuji (voice)2025U Takes TerraTVChongyue (Voice)2025Mashin Creator WataruTVMr. Liar (voice)2025I Have a Crush at WorkTVPastor (voice)2024Nintama Rantarō: Invincible Master of the Dokutake NinjaHansuke Doi (voice)2024Good Bye, Dragon LifeTVDio (voice)2024Ranma1/2TVMousse (voice)2024I Parry EverythingTVCarew (voice)2024Kaiju No. 8TVKaiju No. 11 (voice)2023The Birth of Kitaro: The Mystery of GeGeGeKitarou's Father (voice)2023OnimushaTVKojiro Sasaki (voice)2023PLUTOTVSahad (voice) · Pluto (voice)2023The Most Heretical Last Boss Queen: From Villainess to SaviorTVClark Darwin (voice)2023Rurouni KenshinTVNarration (voice)2023Black Clover: Sword of the Wizard KingConrad Leto (voice)2023HIGH CARDTVNorman Kingstat (voice)2022Demon Slayer: Kimetsu no Yaiba - Asakusa ArcMuzan Kibutsuji (voice)2022Avataro Sentai Donbrothers meets Kamen Rider Den-O: Aim for it! The Don-OTVMomotaros (voice)2021My Hero Academia: World Heroes' MissionEddie Soul (voice)2021Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero ChroniclesMomotaros (voice) / Kamen Rider Den-O (voice)2020Higurashi: When They Cry - NEWTVKyousuke Irie (voice)2020Kamen Rider Den-O: The Birth of Pretty Den-O!Momotaros (voice)2020The Misfit of Demon King AcademyTVAhide Alobo Agatze (voice)2019Ascendance of a BookwormTVEustachius (voice)2019SAINT SEIYA: Knights of the ZodiacTVScorpio Milo (voice)2019SarazanmaiTVYuri Kamome2019Demon Slayer: Kimetsu no YaibaTVMuzan Kibutsuji (voice)2019Demon Slayer: Kimetsu no Yaiba - Sibling's BondMuzan Kibutsuji (voice)2019Star☆Twinkle PreCureTVToto Hagoromo (voice)2018Kamen Rider Heisei Generations ForeverMomotaros / Kamen Rider Den-O Sword Form (voice)2018Saint Seiya: Saintia ShoTVScorpio Milo (voice)2018Golden KamuyTVKazuo Henmi (voice)2018SWORD GAI: The AnimationTVMiura Takuma2018The Ryuo's Work is Never Done!TVKiyotaki Kousuke (voice)2017Mazinger Z: InfinityTetsuya Tsurugi (voice)2017Saraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!-Momotaros2017THE REFLECTIONTVMichael Holden (voice)2017The Laughing Salesman NEWTVShisao Kihara(Story2)2017Kamen Rider × Super Sentai: Ultra Super Hero WarsMomotaros - Kamen Rider Den-O Sword Form (voice)2016To Be HeroTVChinese Tohoku Muffler (voice)2016Mob Psycho 100TVMorizo Ebihara (voice) · Musashi Goda (voice)2016Naruto OVA 12: The Day Naruto Became HokageIruka Umino (voice)2016Showa Genroku Rakugo ShinjuTVEisuke Higuchi (voice)2015Mobile Suit Gundam: The Origin II - Artesia's SorrowChar Aznable (voice)2015Saint Seiya: Soul of GoldTVScorpio Milo (voice)2014Cross Ange: Rondo of Angels and DragonsTVEmbryo (voice)2014Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super SentaiKamen Rider Den-O Sword Form (voice)2014Space DandyTVPublic Prosecutor (voice)2013Hunter x Hunter: The Last MissionWing (voice)2013Gingitsune: Messenger Fox of the GodsTVTatsuo Saeki (voice)2013声優戦隊ボイストーム7TV(voice)2013Higurashi: When They Cry - OutbreakKyousuke Irie (voice)2013Triple Combination: Transformers Go!TVGekisōmaru (voice)2012Road to Ninja: Naruto the MovieIruka Umino (voice)2012Kamen Rider × Super Sentai: Super Hero WarsMomotaros - Kamen Rider Den-O Sword Form (voice)2012Glitter ForceTVHiroshi Hoshizora2011Guilty CrownTVKurosu Ouma (voice)2011Hunter x HunterTVWing (voice)2011Detective Conan: Quarter of SilenceShogo Hikawa (voice)2011OOO, Den-O, All Riders: Let's Go Kamen RidersMomotaros / Kamen Rider Den-O Sword Form (voice)2011Saiyuki GaidenTVKonzen Dōji (voice)2011Nintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck!Hansuke Doi (voice)2011OOO, Den-O, All Riders: Let's Go Kamen Riders: ~Let's Look! Only Your 48 Riders~Momotaros (voice)2010Psychic Detective YakumoTVIsshin Saitō2010Kamen Rider × Kamen Rider × Kamen Rider The Movie Cho-Den-O Trilogy Movie Released Memorial Special Stage: Imagin Super Climax Tour 20102010Super Kamen Rider Den-O Trilogy - Episode Yellow: Treasure de End PiratesMomotaros (voice)2010Super Kamen Rider Den-O Trilogy - Episode Blue: The Dispatched Imagin is NewtralMomotaros (voice)2010Super Kamen Rider Den-O Trilogy - Episode Red: Zero's Star TwinkleMomotaros (voice)2010KatanagatariTVUmigame Maniwa (voice)2010Kamen Rider Decade: Final StageMomotaros / Kamen Rider Den-O (Sword Form)2009Kamen Rider × Kamen Rider W & Decade: Movie War 2010Kamen Rider Den-O (voice)200910th Anniversary Project: Masked Rider LIVE & SHOWKamen Rider Den-O Sword Form (voice)2009Kamen Rider Decade: All Riders vs. Dai-ShockerMomotaros / Kamen Rider Den-O (voice)2009Dogs: Bullets & CarnageTVErnst Rammsteiner2009Super Kamen Rider Den-O & Decade NEO Generations: The Onigashima WarshipMomotaros (voice) · Theme Song Performance2009Cookin' Idol Ai! Mai! Main!TV柊修2009Saraba Kamen Rider Den-O: Special Event -Saraba Imagin! At Climax in the Entire Japan!!-Momotaros (voice)2009Kamen Rider Kiva & Den-O: DenLiner, Into Space!Momotaros (voice)2008Imagin Anime: Momotaros Forever!/Imajin Terminal StationMomotaros (voice)2008A Certain Magical IndexTVAleister Crowley (voice)2008Farewell Kamen Rider Den-O: Final CountdownMomotaros (voice)2008Kamen Rider Kiva: King of the Castle in the Demon WorldPenetentiary Officer Sanjo2008Momotaros' King of the Crimson CastleMomotaros (voice)2008Kamen Rider Den-O: Final Trilogy Special EditionMomotaros (voice)2008Momotaros' King of the Crimson CastleTVMomotaros (voice)2008Blade of the ImmortalTVSouri (voice)2008SekireiTVHiroto Minaka2008Kamen Rider Den-O: Imagin AnimeTVMomotaros (voice)2008Kamen Rider Den-O & Kiva: Climax DekaMomotaros (voice) · Theme Song Performance2007Kamen Rider Den-O: Final StageMomotaros2007Kamen Rider Den-O: Singing, Dancing, Great Training!!Momotaros (voice)2007Kamen Rider Den-O The Movie: I'm Born!Momotaros (voice)2007Crayon Shin-chan Midsummer Night: I Have Arrived! The Storm is Called Den-O vs. Shin-O! 60 Minute Special!!Momotaros (voice)2007Momotaros' Summer VacationMomotaros (voice)2007Saiyuki Reload: BurialTVGenjō Sanzō (voice)2007Naruto ShippūdenTVIruka Umino (voice)2007Kamen Rider Den-OTVMomotaros (voice)2006Shonen OnmyoujiTV2006Loving Angel AngeliqueTVLuva2006Higurashi: When They CryTVKyousuke Irie (voice)2005My-OtomeTVRad (voice)2005MÄR: Märchen Awakens RomanceTVDanna Toramizu2004Gin'yuu Mokushiroku Meine LiebeTVLudwig Herzog von Mohn nahe Liechtenstein (voice)2004BleachTVAaroniero Arruruerie (voice)2004My-HimeTVReito Kanzaki (voice)2004Samurai ChamplooTVYamane (voice)2004Paranoia AgentTVMitsuhiro Maniwa (voice)2004Paranoia Agent: Part 1まにわ みつひろ2003Requiem from the DarknessTVMomosuke Yamaoka (voice)2002Saint Seiya: The Hades ChapterTVMilo (voice)2002Mobile Suit Gundam SEEDTVRau Le Creuset (voice) · Rey Za Burrel (voice)2002NarutoTVIruka Umino (voice)2002Saiyuki Interactive2002Animation Store ManagerRyuu Raiba (voice)2002Angelique: Twin CollectionTVLuva (voice) · Theme Song Performance2002Mirage of BlazeTVTakaya Ohgi (voice)2001Saiyuki: RequiemGenjo Sanzo (voice)2000Reign: The Conqueror MovieAlexander2000Descendants of DarknessTVYutaka Watari (voice)2000SaiyukiTVGenjo Sanzo (voice) · Konzen Douji (voice)2000Baby Felix & FriendsFelix The Cat1999Reign: The ConquerorTVAlexander (voice)1999Pet Shop of HorrorsTVCount D (voice)1999Bビーダマン爆外伝VTVKurobon1999Harlock Saga - The Ring of the NibelungsTV1998Gundam Wing: The Endless WaltzDuo Maxwell (voice)1998Nightwalker: The Midnight DetectiveTVBait1998TRIGUNTVLegato Bluesummers (voice)1998Bomberman B-Daman BakugaidenTV1998Outlaw StarTVFred (voice)1997Twilight of the Dark MasterShijo Tsunami (voice)1997Chimera: Angel of DeathRon1997DragoonTVRain Keeves Fearudo (voice)1997Hakugei: Legend of the Moby DickTV1997Hyper PoliceTVSakunoshin Chikura1996Ultraman Super Fighter LegendUltraseven / Ultraman Leo (voice)1996X: The MovieShougo1996Yawara! Atlanta Special1996Violinist of Hamelin: The MovieRaiel (voice)1996B'T XTVQuatro (voice)1996The Legend of ZorroTVDon Diego de la Vega / Zorro1996Special Duty Combat Unit ShinesmanTVShujin Seki (voice)1996The End of the Century DarlingTodorokki Kouhei (voice)1995Bio HunterKomada1995Mobile Suit Gundam WingTVDuo Maxwell (voice)1995Udauda Yatteru Hima wa Nee!TV(voice)1994Wild 7: Biker KnightsDairoku Hiba1994Wild 7TVDairoku Hiba1994The Irresponsible Captain Tylor OVATVDom (voice)1994I'm Not an Angel!Bunta Kouno (voice)1994Love Wedge 2Riki (voice)1994Dorami-chan: A Blue Straw HatCrow (voice)1994GenocyberSakomizu (voice)1994Natsuki CrisisTVKyōtarō Himuro1993Please Save My EarthTVMikuro Yakushimaru (voice)1993Black JackTVTokio Umetani (voice)1993Aoki Densetsu Shoot!TVAkihiko Himuro (voice)1993Ocean WavesYutaka Matsuno (voice)1993Suikoden Demon CenturyTakateru Suga (voice)1993Kiss Me on the Apple of My EyeNaoto (voice)1993Ninja ScrollYurimaru (voice)1993Ninja Boy RantaroTVHansuke Doi1993The Irresponsible Captain TylorTVRu Baraba Dom1992Download: Devil's CircuitSid (voice)1992D-1 DevastatorTV谷田辺了1992Oruorane the Cat PlayerThe Cellist1992Love Wedge 1Riki (voice)1992Ai no KusabiTVRiki (voice)1992Bastard!!TV1992Ranma 1/2 the Movie 2: Nihao My ConcubineMousse (voice)1992Yawara! Go Get 'Em, Wimpy Kids!!(voice)1992Princess Army: Wedding CombatTVYuuya Hashiba1992Calico Cat Holmes and the Lord of the Haunted CastleYoshitaro Katayama (voice)1992The Weathering ContinentTieh (voice)1991Moonlight PierceHiroshi Takama (voice)1991Nyūin Bokki Monogatari Ojiji ni!TV1991Inferious Interplanetary War Chronicle - Condition GreenSoo Laform (voice)1991Here Is GreenwoodTVShinobu Tezuka (voice)1991Ranma 1/2 the Movie: Big Trouble in Nekonron, ChinaMousse (voice)1991Handsome GirlIchiya Kumagai (voice)1991IzumoTVIzumo (voice)1991Legend of Heavenly Sphere Shurato: The Secret Feud of CreationTVShurato1991Detonator OrgunTVKnock1991Yuukan Club1991Nadia: The Secret of Blue Water - The Motion PictureFalt (voice)1991Nadia: The Secret of Blue Water - Nautilus Story IIFate (voice)1991Trusty GinjiroHideki Mitsui (voice)1991Hisashi Eguchi's Kotobuki Goro ShowPiston Akagi (voice)1991Blazing Transfer StudentTVNoboru Takizawa (voice)1991Akai HayateTV1991Future GPX Cyber FormulaTVJotaro Kaga1990The Hakkenden: Legend of the Dog WarriorsTVShino Inuzuka (voice)1990TOKYO CITY Melhen 21990Marina the Manga Artist Goes to CamelotBijomaru Shizuka (voice)1990Midoriyama High School, Koshien Edition (Movie)1990Milky Passion: Dougenzaka - The Castle of LoveOotsuki (voice)1990GoddamnHans Schultz1990GoddamnTVHans Schultz1990Nadia: The Secret of Blue WaterTVFejto (voice)1990Heart-Coloured Killer TicketChuta Misora (voice)1990Ryokunohara Labyrinth - Sparkling PhantomHiroki Imashi1989Demon Hunter MakaryūdoShou Kurogane (voice)1989Yawara!TVMatsuda / Eiji (voice)1989Darkness of the Sea, Shadow of the MoonTVKatsuyuki Touma (voice)1989Dash! YonkuroTV1989Angel CopTachihara (voice)1989Cinderella ExpressYuji Shimano1989Star Cat Full HouseTV1989Scarlet Demon1989Ranma ½TVMousse (voice)1989Madö King GranzörtTVGrunwald1989ShuratoTVShurato1989Nightsong of SplendorTV1989Hades Project: Zeorymer ExtinctionMasato Akitsu / Masaki Kihara (voice)1988Kaze wo Nuke!1988Hades Project: Zeorymer SeparationMasato Akitsu (voice) · Masaki Kihara (voice)1988Hades Project ZeorymerTV(voice)1988Armor Hunter MerowlinkTVPFC Cepres1988Dragon CenturyCarmine (voice)1988Dragon CenturyTVCarmine1988Sunlight All Around! Ka - su - mi: You Were in My DreamsReporter B (voice)1988Zillion: Burning NightJ.J. (voice)1988Spirit WarriorTVKujaku (voice)1988Balthus: Tia's RadianceEud (voice)1988FTVGunma Akagi (voice)1987The SamuraiTakeshi Chimatsuri1987TO-YShouji (voice)1987ZillionTVJJ1987Maryuu Senki1987Evil Dragon War ChroniclesTV錦繍 (voice)1987Campus Special Investigator HikaruonHikaru Shihodo / Hikaruon (voice)1986Castle in the SkyAdditional Voices (voice)1986Call Me TonightHayata (voice)1985Magical Emi, the Magic StarTVCustomer A (voice)1971Kamen RiderTVKamen Rider Den-O (voice) · Momotaros (voice)