Koji Seki

Acting

Born November 25, 1982 (age 43)

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.

Filmography

Star Wars: Visions Presents - The Ninth Jedi

Star Wars: Visions Presents - The Ninth Jedi2026 · Satellite Digger (voice)

Akane-banashi

Akane-banashi2026 · Chusuke Chuotei (voice)

You and I Are Polar Opposites

You and I Are Polar Opposites2026 · Convenience Store Manager (voice)

A Wigwam For The Storks

A Wigwam For The Storks2025 · Mathematics Teacher (voice)

Solo Camping for Two

Solo Camping for Two2025 · Izakaya Manager (voice)

Turkey! Time to Strike

Turkey! Time to Strike2025 · Samurai (voice)

Single liebt Single

Single liebt Single2025 · Merchant (voice)

Summer Pockets

Summer Pockets2025 · (voice)

Catch Me at the Ballpark!

Catch Me at the Ballpark!2025 · Kaiser (voice)

名前、呼んでほしい

名前、呼んでほしい2025

Puniru Is a Kawaii Slime

Puniru Is a Kawaii Slime2024 · Academic Researchers (voice)

Orb: On the Movements of the Earth

Orb: On the Movements of the Earth2024 · Knight (voice)

Dan Da Dan

Dan Da Dan2024 · TV Station Producer (voice)

Let This Grieving Soul Retire

Let This Grieving Soul Retire2024 · Greg Zangief (voice)

DAN DA DAN: First Encounter

DAN DA DAN: First Encounter2024 · TV Station Producer (voice)

Umamusume: Pretty Derby - Beginning of a New Era

Umamusume: Pretty Derby - Beginning of a New Era2024 · (voice)

Mission: Yozakura Family

Mission: Yozakura Family2024 · Detective (voice)

HAIKYU!! The Dumpster Battle

HAIKYU!! The Dumpster Battle2024 · Patient (voice)

Performing Kaoru's Funeral

Performing Kaoru's Funeral2024

Hitodzuma otoko (men)-tsukuri hiwaina ajiwai

Hitodzuma otoko (men)-tsukuri hiwaina ajiwai2024

Chime

Tearmoon Empire

Tearmoon Empire2023 · Priest (voice)

Frieren: Beyond Journey's End

Frieren: Beyond Journey's End2023 · Villager (voice)

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

I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too2023 · (voice)

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

The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far2023 · Sebas (voice)

NieR:Automata Ver1.1a

NieR:Automata Ver1.1a2023 · Kingdom Citizen (voice)

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

Sword Art Online the Movie – Progressive – Scherzo of Deep Night2022 · Naijan (voice)

BLUE LOCK

BLUE LOCK2022 · Reporter B (voice)

SPY x FAMILY

SPY x FAMILY2022 · Rahden (voice)

Mom in the Mirror

Mom in the Mirror2022

Star Wars: Visions

Star Wars: Visions2021 · Eno's Father / Resistance Member (voice)

Remake Our Life!

Remake Our Life!2021 · (voice)

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

I've Been Killing Slimes for 300 Years and Maxed Out My Level2021 · Store Customer E (voice)

Super Cub

Super Cub2021 · Clerk (voice)

Yashahime: Princess Half-Demon

Yashahime: Princess Half-Demon2020 · Thug (voice)

JUJUTSU KAISEN

JUJUTSU KAISEN2020 · Fumi's Father (voice)

Tower of God

Tower of God2020 · (voice)

ID: INVADED

ID: INVADED2020 · Staff (voice)

Married Woman's Wetland Disturbed by the Tip of the Tongue

Married Woman's Wetland Disturbed by the Tip of the Tongue2020

The Lonely 19:00

The Lonely 19:002020

The Quintessential Quintuplets

The Quintessential Quintuplets2019 · Teacher (voice)

March Comes In Like a Lion

March Comes In Like a Lion2016 · Authorized Person 3 (voice)

Haikyu!!

Haikyu!!2014 · Kai Akakura (voice)

Sword Art Online

Sword Art Online2012 · Technical Staff (voice)

Daily Lives of High School Boys

Daily Lives of High School Boys2012 · Basketball Guy (voice)