Koji Seki

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

JUJUTSU KAISEN

SPY x FAMILY

Frieren: Beyond Journey's End

Sword Art Online

Mission: Yozakura Family

All Movies (4)

DAN DA DAN: First Encounter2024 · as TV Station Producer (voice)
Umamusume: Pretty Derby - Beginning of a New Era2024 · as (voice)
HAIKYU!! The Dumpster Battle2024 · as Patient (voice)
Sword Art Online the Movie – Progressive – Scherzo of Deep Night2022 · as Naijan (voice)

All TV Shows (64)

Akane-banashi2026 · as Chusuke Chuotei (voice)
You and I Are Polar Opposites2026 · as Convenience Store Manager (voice)
Inexpressive Kashiwada and Expressive Oota2025 · as Mathematics Teacher (voice)
Solo Camping for Two2025 · as Izakaya Manager (voice)
Turkey! Time to Strike2025 · as Samurai (voice)
Welcome to the Outcast's Restaurant!2025 · as Merchant (voice)
Summer Pockets2025 · as (voice)
Catch Me at the Ballpark!2025 · as Kaiser (voice)
Puniru Is a Kawaii Slime2024 · as Academic Researchers (voice)
Puniru Is a Kawaii Slime2024 · as Academic Researcher (voice)
Orb: On the Movements of the Earth2024 · as Knight (voice)
Dan Da Dan2024 · as TV Station Producer (voice)
Dan Da Dan2024 · as Male Client (voice)
Dan Da Dan2024 · as Male Teacher (voice)
Let This Grieving Soul Retire2024 · as Greg Zangief (voice)
Mission: Yozakura Family2024 · as Detective (voice)
Mission: Yozakura Family2024 · as (voice)
Mission: Yozakura Family2024 · as Battalion member (voice)
Tearmoon Empire2023 · as Priest (voice)
Tearmoon Empire2023 · as Man (voice)
Tearmoon Empire2023 · as Soldier (voice)
Tearmoon Empire2023 · as Merchant (voice)
Frieren: Beyond Journey's End2023 · as Villager (voice)
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too2023 · as (voice)
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far2023 · as Sebas (voice)
NieR:Automata Ver1.1a2023 · as Kingdom Citizen (voice)
NieR:Automata Ver1.1a2023 · as Machine Creature (voice)
BLUE LOCK2022 · as Reporter B (voice)
SPY x FAMILY2022 · as Rahden (voice)
Star Wars: Visions2021 · as Eno's Father / Resistance Member (voice)
Remake Our Life!2021 · as (voice)
I've Been Killing Slimes for 300 Years and Maxed Out My Level2021 · as Store Customer E (voice)
Super Cub2021 · as Clerk (voice)
Yashahime: Princess Half-Demon2020 · as Thug (voice)
Yashahime: Princess Half-Demon2020 · as Old man (voice)
Yashahime: Princess Half-Demon2020 · as Peddler (voice)
Yashahime: Princess Half-Demon2020 · as Official (voice)
Yashahime: Princess Half-Demon2020 · as Guard (voice)
Yashahime: Princess Half-Demon2020 · as Villager (voice)
Yashahime: Princess Half-Demon2020 · as Chimimoryo (voice)
Yashahime: Princess Half-Demon2020 · as Bird of Paradise (voice)
Yashahime: Princess Half-Demon2020 · as Peasant (voice)
Yashahime: Princess Half-Demon2020 · as Townsfolk (voice)
Yashahime: Princess Half-Demon2020 · as Subordinate (voice)
Yashahime: Princess Half-Demon2020 · as Vassal (voice)
Yashahime: Princess Half-Demon2020 · as Demon (voice)
Yashahime: Princess Half-Demon2020 · as Fisherman (voice)
Yashahime: Princess Half-Demon2020 · as Rock Demon (voice)
Yashahime: Princess Half-Demon2020 · as Palanquin Carrier (voice)
Yashahime: Princess Half-Demon2020 · as Green ogre (voice)
Yashahime: Princess Half-Demon2020 · as Staff member (voice)
Yashahime: Princess Half-Demon2020 · as Yokai (voice)
Yashahime: Princess Half-Demon2020 · as Raccoon dog in Mamiana Island (voice)
JUJUTSU KAISEN2020 · as Fumi's Father (voice)
Tower of God2020 · as (voice)
ID: INVADED2020 · as Staff (voice)
The Quintessential Quintuplets2019 · as Teacher (voice)
The Quintessential Quintuplets2019 · as Homeroom Teacher (voice)
March Comes In Like a Lion2016 · as Authorized Person 3 (voice)
Haikyu!!2014 · as Kai Akakura (voice)
Sword Art Online2012 · as Technical Staff (voice)
Sword Art Online2012 · as Goblin (voice)
Daily Lives of High School Boys2012 · as Basketball Guy (voice)
Daily Lives of High School Boys2012 · as Boy B (voice)