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.
as Cosmo Gavarion System Voice / Gavarion Trigger System Voice
as Gavarion Trigger System Voice (voice)
as GavarionTrigger / CosmoGavarion (voice)(23 eps)
as Cosmo Gavarion System / Gavarion Trigger System (voice), Supreme Chancellor(23 eps)
as Hifumi Ōshibu (voice)(12 eps)
as Muzan Kibutsuji (voice)
as Mr. Liar (voice)(2 eps)
as Pastor (voice)(1 ep)
as Hansuke Doi (voice)
as Dio (voice)(3 eps)
as Mousse (voice)(4 eps)
as Carew (voice)(12 eps)
as Kaiju No. 11 (voice)(1 ep)
as Kitarou's Father (voice)
as Kojiro Sasaki (voice)(8 eps)
as Sahad (voice)(1 ep)
as Pluto (voice)(3 eps)
as Clark Darwin (voice)(12 eps)
as Narration (voice)(21 eps)
as Conrad Leto (voice)
as Norman Kingstat (voice)(12 eps)
as Muzan Kibutsuji (voice)
as Momotaros (voice)(3 eps)
as Eddie Soul (voice)
as Momotaros (voice) / Kamen Rider Den-O (voice)
as Kyousuke Irie (voice)(39 eps)
as Momotaros (voice)
as Ahide Alobo Agatze (voice)(6 eps)
as Eustachius (voice)(7 eps)
as Scorpio Milo (voice)(1 ep)
as Yuri Kamome(1 ep)
as Muzan Kibutsuji (voice)(13 eps)
as Muzan Kibutsuji (voice)
as Toto Hagoromo (voice)(3 eps)
as Momotaros / Kamen Rider Den-O Sword Form (voice)
as Scorpio Milo (voice)(10 eps)
as Kazuo Henmi (voice)(62 eps)
as Miura Takuma(12 eps)
as Kiyotaki Kousuke (voice)(12 eps)
as Tetsuya Tsurugi (voice)
as Michael Holden (voice)(12 eps)
as Shisao Kihara(Story2)(12 eps)
as Momotaros - Kamen Rider Den-O Sword Form (voice)
as Chinese Tohoku Muffler (voice)(12 eps)
as Morizo Ebihara (voice)(1 ep)
as Musashi Goda (voice)(14 eps)
as Iruka Umino (voice)
as Eisuke Higuchi (voice)(25 eps)
as Char Aznable (voice)
as Scorpio Milo (voice)(13 eps)
as Embryo (voice)(25 eps)
as Kamen Rider Den-O Sword Form (voice)
as Public Prosecutor (voice)(1 ep)
as Wing (voice)
as Tatsuo Saeki (voice)(12 eps)
as (voice)(11 eps)
as Kyousuke Irie (voice)
as Gekisōmaru (voice)(10 eps)
as Iruka Umino (voice)
as Momotaros - Kamen Rider Den-O Sword Form (voice)
as Hiroshi Hoshizora(48 eps)
as Kurosu Ouma (voice)(1 ep)
as Wing (voice)(10 eps)
as Shogo Hikawa (voice)
as Momotaros / Kamen Rider Den-O Sword Form (voice)
as Konzen Dōji (voice)(4 eps)
as Hansuke Doi (voice)
as Momotaros (voice)
as Isshin Saitō(13 eps)
as Momotaros (voice)
as Momotaros (voice)
as Momotaros (voice)
as Umigame Maniwa (voice)(12 eps)
as Momotaros / Kamen Rider Den-O (Sword Form)
as Kamen Rider Den-O (voice)
as Kamen Rider Den-O Sword Form (voice)
as Momotaros / Kamen Rider Den-O (voice)
as Ernst Rammsteiner(4 eps)
as Momotaros (voice)
as 柊修(25 eps)
as Momotaros (voice)
as Momotaros (voice)
as Aleister Crowley (voice)(9 eps)
as Momotaros (voice)
as Penetentiary Officer Sanjo
as Momotaros (voice)
as Momotaros (voice)
as Momotaros (voice)(4 eps)
as Souri (voice)(2 eps)
as Hiroto Minaka(25 eps)
as Momotaros (voice)(34 eps)
as Momotaros (voice)
as Momotaros
as Momotaros (voice)
as Momotaros (voice)
as Momotaros (voice)
as Genjō Sanzō (voice)(3 eps)
as Iruka Umino (voice)(320 eps)
as Momotaros (voice)(49 eps)
as Luva
as Kyousuke Irie (voice)(10 eps)
as Rad (voice)(26 eps)
as Danna Toramizu(102 eps)
as Ludwig Herzog von Mohn nahe Liechtenstein (voice)(26 eps)
as Aaroniero Arruruerie (voice)
as Reito Kanzaki (voice)(26 eps)
as Yamane (voice)(26 eps)
as Mitsuhiro Maniwa (voice)(13 eps)
as まにわ みつひろ
as Momosuke Yamaoka (voice)(13 eps)
as Makoto Isshiki (voice)
as Milo (voice)(10 eps)
as Rau Le Creuset (voice)(56 eps)
as Rey Za Burrel (voice)(50 eps)
as Iruka Umino (voice)(220 eps)
as Ryuu Raiba (voice)
as Luva (voice)(8 eps)
as Takaya Ohgi (voice)(13 eps)
as Genjo Sanzo (voice)
as Alexander
as Yutaka Watari (voice)(13 eps)
as Konzen Douji (voice)(50 eps)
as Genjo Sanzo (voice)(126 eps)
as Felix The Cat
as Alexander (voice)(13 eps)
as Count D (voice)(4 eps)
as Kurobon(50 eps)
as Duo Maxwell (voice)
as Bait(12 eps)
as Legato Bluesummers (voice)(7 eps)
as Fred (voice)(26 eps)
as Shijo Tsunami (voice)
as Ron (voice)
as Rain Keeves Fearudo (voice)(3 eps)
as Sakunoshin Chikura(25 eps)
as Ultraseven / Ultraman Leo (voice)
as Shougo
as Raiel (voice)
as Quatro (voice)(14 eps)
as Don Diego de la Vega / Zorro (voice)(52 eps)
as Shujin Seki (voice)(2 eps)
as Todorokki Kouhei (voice)
as Komada
as Nasser (voice)
as Duo Maxwell (voice)(49 eps)
as (voice)(2 eps)
as Dairoku Hiba
as Dairoku Hiba(2 eps)
as Ru Baraba Dom (voice)
as Dom (voice)(10 eps)
as Bunta Kouno (voice)
as Riki (voice)
as Crow (voice)
as Sakomizu (voice)
as Kyōtarō Himuro(2 eps)
as Mikuro Yakushimaru (voice)(6 eps)
as Tokio Umetani (voice)(1 ep)
as Akihiko Himuro (voice)(58 eps)
as Yutaka Matsuno (voice)
as Takateru Suga (voice)
as Naoto (voice)
as Yurimaru (voice)
as Hansuke Doi(702 eps)
as Ru Baraba Dom(26 eps)
as Sid (voice)
as 谷田辺了(2 eps)
as The Cellist
as Riki (voice)
as Riki (voice)(2 eps)
as Mousse (voice)
as (voice)
as Yuuya Hashiba(2 eps)
as Yoshitaro Katayama (voice)
as Tieh (voice)
as Hiroshi Takama (voice)
as Soo Laform (voice)
as Shinobu Tezuka (voice)(6 eps)
as Mousse (voice)
as Nikaidou(47 eps)
as Ichiya Kumagai (voice)
as Izumo (voice)(2 eps)
as Shurato(6 eps)
as Knock(3 eps)
as Falt (voice)
as Fate (voice)
as Hideki Mitsui (voice)
as Piston Akagi (voice)
as Noboru Takizawa (voice)(2 eps)
as Jotaro Kaga(64 eps)
as Shino Inuzuka (voice)(13 eps)
as Bijomaru Shizuka (voice)
as Ootsuki (voice)
as Hans Schultz
as Hans Schultz(2 eps)
as 페이트(39 eps)
as Chuta Misora (voice)
as Hiroki Imashi
as Shou Kurogane (voice)
as Matsuda / Eiji (voice)(124 eps)
as Katsuyuki Touma (voice)(3 eps)
as Tachihara (voice)
as Yuji Shimano
as Mousse (voice)(13 eps)
as Grunwald(41 eps)
as Shurato(38 eps)
as Masato Akitsu / Masaki Kihara (voice)
as Masato Akitsu (voice)
as Masaki Kihara (voice)
as (voice)(4 eps)
as PFC Cepres(1 ep)
as Carmine (voice)
as Carmine(2 eps)
as Reporter B (voice)
as J.J. (voice)
as Kujaku (voice)(3 eps)
as Eud (voice)
as Gunma Akagi (voice)(31 eps)
as Takeshi Chimatsuri
as Shouji (voice)
as JJ(31 eps)
as 錦繍 (voice)(2 eps)
as Hikaru Shihodo / Hikaruon (voice)
as (voice)
as Hayata (voice)
as Customer A (voice)(1 ep)
as Male member (voice)(1 ep)
as Kamen Rider Den-O (voice)(2 eps)
as Momotaros (voice)(54 eps)