Koji Seki

Known for

Acting

Born

November 25, 1982 (age 43)

Birthplace

Saitama, Japan

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.

Best known work

JUJUTSU KAISEN

2020

SPY x FAMILY

2022

Sword Art Online

2012

Haikyu!!

2014

Frieren: Beyond Journey's End

2023

Dan Da Dan

2024

The Quintessential Quintuplets

2019

BLUE LOCK

2022

Tower of God

2020

Star Wars: Visions

2021

Filmography

2026
Star Wars: Visions Presents - The Ninth JediTV
as Satellite Digger (voice) (2 episodes), as Eesha's Father (voice) (1 episode), as Villager on Samaz (voice) (1 episode)
2026
Akane-banashiTV
as Chusuke Chuotei (voice) (1 episode)
2026
You and I Are Polar OppositesTV
as Convenience Store Manager (voice) (2 episodes)
2025
Inexpressive Kashiwada and Expressive OotaTV
as Mathematics Teacher (voice) (1 episode)
2025
Solo Camping for TwoTV
as Izakaya Manager (voice) (1 episode)
2025
Turkey! Time to StrikeTV
as Samurai (voice) (1 episode)
2025
Welcome to the Outcast's Restaurant!TV
as Merchant (voice) (1 episode)
2025
Summer PocketsTV
as (voice) (3 episodes)
2025
Catch Me at the Ballpark!TV
as Kaiser (voice) (1 episode)
2024
Puniru Is a Kawaii SlimeTV
as Academic Researchers (voice) (2 episodes), as Academic Researcher (voice) (1 episode)
2024
Orb: On the Movements of the EarthTV
as Knight (voice) (1 episode)
2024
Dan Da DanTV
as TV Station Producer (voice) (1 episode), as Male Client (voice) (1 episode), as Male Teacher (voice) (1 episode)
2024
Let This Grieving Soul RetireTV
as Greg Zangief (voice) (24 episodes)
2024
DAN DA DAN: First Encounter
as TV Station Producer (voice)
2024
Umamusume: Pretty Derby - Beginning of a New Era
as (voice)
2024
Mission: Yozakura FamilyTV
as Detective (voice) (1 episode), as (voice) (1 episode), as Battalion member (voice) (1 episode)
2024
HAIKYU!! The Dumpster Battle
as Patient (voice)
2023
Tearmoon EmpireTV
as Priest (voice) (2 episodes), as Man (voice) (1 episode), as Soldier (voice) (1 episode), as Merchant (voice) (1 episode)
2023
Frieren: Beyond Journey's EndTV
as Villager (voice) (1 episode)
2023
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, TooTV
as (voice) (7 episodes)
2023
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too FarTV
as Sebas (voice) (1 episode)
2023
NieR:Automata Ver1.1aTV
as Kingdom Citizen (voice) (1 episode), as Machine Creature (voice) (1 episode)
2022
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
as Naijan (voice)
2022
BLUE LOCKTV
as Reporter B (voice) (1 episode)
2022
SPY x FAMILYTV
as Rahden (voice) (1 episode)