Koji Seki
Born
November 25, 1982 (42 years old)
Known For
Acting
Place of Birth
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.
Known For
Summer Pockets
(voice) · (3 episodes)
2025
Catch Me at the Ballpark!
Kaiser (voice) · (1 episode)
2025
Puniru Is a Kawaii Slime
Academic Researchers (voice) · (2 episodes)
2024
Orb: On the Movements of the Earth
Knight (voice) · (1 episode)
2024
Dan Da Dan
TV Station Producer (voice) · (1 episode)
2024
Dan Da Dan
Male Client (voice) · (1 episode)
2024
Dan Da Dan
Male Teacher (voice) · (1 episode)
2024
Let This Grieving Soul Retire
Greg Zangief (voice) · (13 episodes)
2024
DAN DA DAN: First Encounter
TV Station Producer (voice)
2024
Mission: Yozakura Family
Detective (voice) · (1 episode)
2024
Mission: Yozakura Family
(voice) · (1 episode)
2024
Mission: Yozakura Family
Battalion member (voice) · (1 episode)
2024
Tearmoon Empire
Priest (voice) · (2 episodes)
2023
Tearmoon Empire
Man (voice) · (1 episode)
2023
Tearmoon Empire
Soldier (voice) · (1 episode)
2023
Tearmoon Empire
Merchant (voice) · (1 episode)
2023
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too
(voice) · (7 episodes)
2023
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far
Sebas (voice) · (1 episode)
2023
NieR:Automata Ver1.1a
Kingdom Citizen (voice) · (1 episode)
2023
NieR:Automata Ver1.1a
Machine Creature (voice) · (1 episode)
2023
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
Naijan (voice)
2022
BLUE LOCK
Reporter B (voice) · (1 episode)
2022
Remake Our Life!
(voice) · (1 episode)
2021
I've Been Killing Slimes for 300 Years and Maxed Out My Level
Store Customer E (voice) · (1 episode)
2021
Super Cub
Clerk (voice) · (2 episodes)
2021
Yashahime: Princess Half-Demon
Thug (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Old man (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Peddler (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Official (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Guard (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Villager (voice) · (4 episodes)
2020
Yashahime: Princess Half-Demon
Chimimoryo (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Bird of Paradise (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Peasant (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Townsfolk (voice) · (2 episodes)
2020
Yashahime: Princess Half-Demon
Subordinate (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Vassal (voice) · (3 episodes)
2020
Yashahime: Princess Half-Demon
Demon (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Fisherman (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Rock Demon (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Palanquin Carrier (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Green ogre (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Staff member (voice) · (1 episode)
2020
Yashahime: Princess Half-Demon
Yokai (voice) · (2 episodes)
2020
Yashahime: Princess Half-Demon
Raccoon dog in Mamiana Island (voice) · (1 episode)
2020
JUJUTSU KAISEN
Fumi's Father (voice) · (1 episode)
2020
Tower of God
(voice) · (1 episode)
2020
ID: INVADED
Staff (voice) · (1 episode)
2020
The Quintessential Quintuplets
Teacher (voice) · (1 episode)
2019
The Quintessential Quintuplets
Homeroom Teacher (voice) · (2 episodes)
2019
March Comes In Like a Lion
Authorized Person 3 (voice) · (1 episode)
2016
Haikyu!!
Kai Akakura (voice) · (4 episodes)
2014
Sword Art Online
Technical Staff (voice) · (1 episode)
2012
Sword Art Online
Goblin (voice) · (1 episode)
2012
Daily Lives of High School Boys
Basketball Guy (voice) · (1 episode)
2012
Daily Lives of High School Boys
Boy B (voice) · (1 episode)
2012