Koji Seki
Acting
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.
Born: November 25, 1982 · Saitama, Japan
Filmography (36)
TV
You and I Are Polar Opposites
2026
Actor: Convenience Store …
TV
Inexpressive Kashiwada and Expressive Oota
2025
Actor: Mathematics Teache…
TV
Solo Camping for Two
2025
Actor: Izakaya Manager (v…
TV
Turkey! Time to Strike
2025
Actor: Samurai (voice)
TV
Welcome to the Outcast's Restaurant!
2025
Actor: Merchant (voice)
TV
Summer Pockets
2025
Actor: (voice)
TV
Catch Me at the Ballpark!
2025
Actor: Kaiser (voice)
TV
Puniru Is a Kawaii Slime
2024
Actor: Academic Researche…Actor: Academic Researche…
TV
Orb: On the Movements of the Earth
2024
Actor: Knight (voice)
TV
Dan Da Dan
2024
Actor: TV Station Produce…Actor: Male Client (voice…+1
TV
Let This Grieving Soul Retire
2024
Actor: Greg Zangief (voic…
DAN DA DAN: First Encounter
2024
Actor: TV Station Produce…
Umamusume: Pretty Derby - Beginning of a New Era
2024
Actor: (voice)
TV
Mission: Yozakura Family
2024
Actor: Detective (voice)Actor: (voice)+1
HAIKYU!! The Dumpster Battle
2024
Actor: Patient (voice)
TV
Tearmoon Empire
2023
Actor: Priest (voice)Actor: Man (voice)+2
TV
Frieren: Beyond Journey's End
2023
Actor: Villager (voice)
TV
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too
2023
Actor: (voice)
TV
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far
2023
Actor: Sebas (voice)
TV
NieR:Automata Ver1.1a
2023
Actor: Kingdom Citizen (v…Actor: Machine Creature (…
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
2022
Actor: Naijan (voice)
TV
BLUE LOCK
2022
Actor: Reporter B (voice)
TV
SPY x FAMILY
2022
Actor: Rahden (voice)
TV
Star Wars: Visions
2021
Actor: Eno's Father / Res…
TV
Remake Our Life!
2021
Actor: (voice)
TV
I've Been Killing Slimes for 300 Years and Maxed Out My Level
2021
Actor: Store Customer E (…
TV
Super Cub
2021
Actor: Clerk (voice)
TV
Yashahime: Princess Half-Demon
2020
Actor: Thug (voice)Actor: Old man (voice)+18
TV
JUJUTSU KAISEN
2020
Actor: Fumi's Father (voi…
TV
Tower of God
2020
Actor: (voice)
TV
ID: INVADED
2020
Actor: Staff (voice)
TV
The Quintessential Quintuplets
2019
Actor: Teacher (voice)Actor: Homeroom Teacher (…
TV
March Comes In Like a Lion
2016
Actor: Authorized Person …
TV
Haikyu!!
2014
Actor: Kai Akakura (voice…
TV
Sword Art Online
2012
Actor: Technical Staff (v…Actor: Goblin (voice)
TV
Daily Lives of High School Boys
2012
Actor: Basketball Guy (vo…Actor: Boy B (voice)