Koji Seki Photo

Koji Seki

Acting

4.7 Popularity Nov 25, 1982 (42 years old) Saitama, Japan

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.

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Known For

Dan Da Dan
Dan Da Dan
2024 as TV Station Producer (voice)
Dan Da Dan
Dan Da Dan
2024 as Male Client (voice)
Dan Da Dan
Dan Da Dan
2024 as Male Teacher (voice)
JUJUTSU KAISEN
JUJUTSU KAISEN
2020 as Fumi's Father (voice)
BLUE LOCK
BLUE LOCK
2022 as Reporter B (voice)
Haikyu!!
Haikyu!!
2014 as Kai Akakura (voice)
DAN DA DAN: First Encounter
DAN DA DAN: First Encounter
2024 as TV Station Producer (voice)
HAIKYU!! The Dumpster Battle
HAIKYU!! The Dumpster Battle
2024 as Patient (voice)

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.

Filmography 60

2025
Turkey! Time to Strike TV

as Samurai (voice)

2025
Welcome to the Outcast's Restaurant! TV

as Merchant (voice)

2025
Summer Pockets TV

as (voice)

2025
Catch Me at the Ballpark! TV

as Kaiser (voice)

2024
Puniru Is a Kawaii Slime TV

as Academic Researchers (voice)

2024
Puniru Is a Kawaii Slime TV

as Academic Researcher (voice)

2024
Orb: On the Movements of the Earth TV

as Knight (voice)

2024
Dan Da Dan TV

as TV Station Producer (voice)

2024
Dan Da Dan TV

as Male Client (voice)

2024
Dan Da Dan TV

as Male Teacher (voice)

2024
Let This Grieving Soul Retire TV

as Greg Zangief (voice)

2024
DAN DA DAN: First Encounter Movie

as TV Station Producer (voice)

2024
Mission: Yozakura Family TV

as Detective (voice)

2024
Mission: Yozakura Family TV

as (voice)

2024
Mission: Yozakura Family TV

as Battalion member (voice)

2024
HAIKYU!! The Dumpster Battle Movie

as Patient (voice)

2023
Tearmoon Empire TV

as Priest (voice)

2023
Tearmoon Empire TV

as Man (voice)

2023
Tearmoon Empire TV

as Soldier (voice)

2023
Tearmoon Empire TV

as Merchant (voice)

Photos 3

Koji Seki Photo
Koji Seki Photo
Koji Seki Photo

Personal Details

Known For Acting
Gender Male
Birthday November 25, 1982 (42 years old)
Place of Birth Saitama, Japan
Also Known As Kouji Seki, 関 幸司, Kōji Seki
Years Active 2012 - 2025
Popularity 4.7
Social Links
IMDb Official Site
Career Stats
60 Total Credits
3 Movie Roles
57 TV Roles
3 Photos