
1982Born, Saitama
39Credits
Koji Seki (関 幸司, Seki Kōji, born November 25, 1982) is a Japanese voice actor from Saitama Prefecture who is affiliated with Raccoon Dog. He graduated from Pro-Fit Voice Actor Training School and joined the agency Pro-Fit. On April 1, 2022, he transferred to Raccoon Dog.
Known for
2025Inexpressive Kashiwada and Expressive OotaMathematics Teacher (voice) · 1 episodeShow
2025Solo Camping for TwoIzakaya Manager (voice) · 1 episodeShow
2025Turkey! Time to StrikeSamurai (voice) · 1 episodeShow
2025Welcome to the Outcast's Restaurant!Merchant (voice) · 1 episodeShow
2025Summer Pockets(voice) · 3 episodesShow
2025Catch Me at the Ballpark!Kaiser (voice) · 1 episodeShow
2024Puniru Is a Kawaii SlimeAcademic Researchers (voice), Academic Researcher (voice) · 2 episodesShow
2024Orb: On the Movements of the EarthKnight (voice) · 1 episodeShow
2024Dan Da DanTV Station Producer (voice), Male Client (voice), Male Teacher (voice) · 1 episodeShow
2024Let This Grieving Soul RetireGreg Zangief (voice) · 24 episodesShow
2024Umamusume: Pretty Derby - Beginning of a New Era(voice)Movie
2024HAIKYU!! The Dumpster BattlePatient (voice)Movie
2023Tearmoon EmpirePriest (voice), Man (voice), Soldier (voice), Merchant (voice) · 2 episodesShow
2023I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too(voice) · 7 episodesShow
2023The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too FarSebas (voice) · 1 episodeShow
2023NieR:Automata Ver1.1aKingdom Citizen (voice), Machine Creature (voice) · 1 episodeShow
2022BLUE LOCKReporter B (voice) · 1 episodeShow
2021Star Wars: VisionsEno's Father / Resistance Member (voice) · 1 episodeShow
2021Remake Our Life!(voice) · 1 episodeShow
2021I've Been Killing Slimes for 300 Years and Maxed Out My LevelStore Customer E (voice) · 1 episodeShow
2021Super CubClerk (voice) · 2 episodesShow
2020Yashahime: Princess Half-DemonThug (voice), Old man (voice), Peddler (voice), Official (voice), Guard (voice), Villager (voice), Chimimoryo (voice), Bird of Paradise (voice), Peasant (voice), Townsfolk (voice), Subordinate (voice), Vassal (voice), Demon (voice), Fisherman (voice), Rock Demon (voice), Palanquin Carrier (voice), Green ogre (voice), Staff member (voice), Yokai (voice), Raccoon dog in Mamiana Island (voice) · 4 episodesShow
2020ID: INVADEDStaff (voice) · 1 episodeShow
2019The Quintessential QuintupletsTeacher (voice), Homeroom Teacher (voice) · 2 episodesShow
2012Daily Lives of High School BoysBasketball Guy (voice), Boy B (voice) · 1 episodeShow
Is this you?
Link these credits to your frames profile.




