Known For: Acting
Born: November 25, 1982
Place of Birth: Saitama, Japan

Koji Seki

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

Akane-banashi

2026 · Chusuke Chuotei (voice)

You and I Are Polar Opposites

2026 · Convenience Store Manager (voice)

Inexpressive Kashiwada and Expressive Oota

2025 · Mathematics Teacher (voice)

Solo Camping for Two

2025 · Izakaya Manager (voice)

Turkey! Time to Strike

2025 · Samurai (voice)

Welcome to the Outcast's Restaurant!

2025 · Merchant (voice)

Summer Pockets

2025 · (voice)

Catch Me at the Ballpark!

2025 · Kaiser (voice)

Puniru Is a Kawaii Slime

2024 · Academic Researchers (voice), Academic Researcher (voice)

Orb: On the Movements of the Earth

2024 · Knight (voice)

Dan Da Dan

2024 · TV Station Producer (voice), Male Client (voice), Male Teacher (voice)

Let This Grieving Soul Retire

2024 · Greg Zangief (voice)

movie

DAN DA DAN: First Encounter

2024 · TV Station Producer (voice)

movie

Umamusume: Pretty Derby - Beginning of a New Era

2024 · (voice)

Mission: Yozakura Family

2024 · Detective (voice), Battalion member (voice)

movie

HAIKYU!! The Dumpster Battle

2024 · Patient (voice)

Tearmoon Empire

2023 · Priest (voice), Man (voice), Soldier (voice), Merchant (voice)

Frieren: Beyond Journey's End

2023 · Villager (voice)

I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too

2023 · (voice)

The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far

2023 · Sebas (voice)

NieR:Automata Ver1.1a

2023 · Kingdom Citizen (voice), Machine Creature (voice)

movie

Sword Art Online the Movie – Progressive – Scherzo of Deep Night

2022 · Naijan (voice)

BLUE LOCK

2022 · Reporter B (voice)

SPY x FAMILY

2022 · Rahden (voice)

Star Wars: Visions

2021 · Eno's Father / Resistance Member (voice)

Remake Our Life!

2021 · (voice)

I've Been Killing Slimes for 300 Years and Maxed Out My Level

2021 · Store Customer E (voice)

Super Cub

2021 · Clerk (voice)

Yashahime: Princess Half-Demon

2020 · Thug (voice), Old man (voice), Peddler (voice), Official (voice), Guard (voice), Villager (voice), Chimimoryo (voice), Bird of Paradise (voice), Peasant (voice), Townsfolk (voice), Subordinate (voice), Vassal (voice), Demon (voice), Fisherman (voice), Rock Demon (voice), Palanquin Carrier (voice), Green ogre (voice), Staff member (voice), Yokai (voice), Raccoon dog in Mamiana Island (voice)