Koji Seki
Acting
71
Acting Credits
Biography
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
Filmography
You and I Are Polar Opposites
2026
as Convenience Store Manager (voice)
Akane-banashi
2026
as Chusuke Chuotei (voice)
Star Wars: Visions Presents - The Ninth Jedi
2026
as Satellite Digger (voice)
Star Wars: Visions Presents - The Ninth Jedi
2026
as Eesha's Father (voice)
Star Wars: Visions Presents - The Ninth Jedi
2026
as Villager on Samaz (voice)
Catch Me at the Ballpark!
2025
as Kaiser (voice)
Summer Pockets
2025
as (voice)
Welcome to the Outcast's Restaurant!
2025
as Merchant (voice)
Turkey! Time to Strike
2025
as Samurai (voice)
Solo Camping for Two
2025
as Izakaya Manager (voice)
Inexpressive Kashiwada and Expressive Oota
2025
as Mathematics Teacher (voice)
DAN DA DAN: First Encounter
2024
as TV Station Producer (voice)
HAIKYU!! The Dumpster Battle
2024
as Patient (voice)
Umamusume: Pretty Derby - Beginning of a New Era
2024
as (voice)
Dan Da Dan
2024
as TV Station Producer (voice)
Dan Da Dan
2024
as Male Client (voice)
Dan Da Dan
2024
as Male Teacher (voice)
Mission: Yozakura Family
2024
as Detective (voice)
Mission: Yozakura Family
2024
as (voice)
Mission: Yozakura Family
2024
as Battalion member (voice)
Let This Grieving Soul Retire
2024
as Greg Zangief (voice)
Orb: On the Movements of the Earth
2024
as Knight (voice)
Puniru Is a Kawaii Slime
2024
as Academic Researchers (voice)
Puniru Is a Kawaii Slime
2024
as Academic Researcher (voice)
NieR:Automata Ver1.1a
2023
as Kingdom Citizen (voice)
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too
2023
as (voice)
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far
2023
as Sebas (voice)
NieR:Automata Ver1.1a
2023
as Machine Creature (voice)
Tearmoon Empire
2023
as Priest (voice)
Tearmoon Empire
2023
as Man (voice)
Tearmoon Empire
2023
as Soldier (voice)
Tearmoon Empire
2023
as Merchant (voice)
Frieren: Beyond Journey's End
2023
as Villager (voice)
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
2022
as Naijan (voice)
BLUE LOCK
2022
as Reporter B (voice)
SPY x FAMILY
2022
as Rahden (voice)
Super Cub
2021
as Clerk (voice)
I've Been Killing Slimes for 300 Years and Maxed Out My Level
2021
as Store Customer E (voice)
Remake Our Life!
2021
as (voice)
Star Wars: Visions
2021
as Eno's Father / Resistance Member (voice)
Yashahime: Princess Half-Demon
2020
as Thug (voice)
Yashahime: Princess Half-Demon
2020
as Official (voice)
Yashahime: Princess Half-Demon
2020
as Peddler (voice)
Yashahime: Princess Half-Demon
2020
as Guard (voice)
Yashahime: Princess Half-Demon
2020
as Old man (voice)
Yashahime: Princess Half-Demon
2020
as Chimimoryo (voice)
Yashahime: Princess Half-Demon
2020
as Villager (voice)
Yashahime: Princess Half-Demon
2020
as Peasant (voice)
Yashahime: Princess Half-Demon
2020
as Bird of Paradise (voice)
Yashahime: Princess Half-Demon
2020
as Subordinate (voice)
Yashahime: Princess Half-Demon
2020
as Townsfolk (voice)
Yashahime: Princess Half-Demon
2020
as Vassal (voice)
Yashahime: Princess Half-Demon
2020
as Fisherman (voice)
Yashahime: Princess Half-Demon
2020
as Demon (voice)
Yashahime: Princess Half-Demon
2020
as Rock Demon (voice)
Yashahime: Princess Half-Demon
2020
as Palanquin Carrier (voice)
Yashahime: Princess Half-Demon
2020
as Green ogre (voice)
Yashahime: Princess Half-Demon
2020
as Staff member (voice)
Yashahime: Princess Half-Demon
2020
as Yokai (voice)
Yashahime: Princess Half-Demon
2020
as Raccoon dog in Mamiana Island (voice)
JUJUTSU KAISEN
2020
as Fumi's Father (voice)
Tower of God
2020
as (voice)
ID: INVADED
2020
as Staff (voice)
The Quintessential Quintuplets
2019
as Teacher (voice)
The Quintessential Quintuplets
2019
as Homeroom Teacher (voice)
March Comes In Like a Lion
2016
as Authorized Person 3 (voice)
Haikyu!!
2014
as Kai Akakura (voice)
Sword Art Online
2012
as Technical Staff (voice)
Sword Art Online
2012
as Goblin (voice)
Daily Lives of High School Boys
2012
as Basketball Guy (voice)
Daily Lives of High School Boys
2012
as Boy B (voice)