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Koji Seki

Personal Information

Known ForActing
GenderMale
Birth DateNov 25, 1982 (43 years old)
Zodiac Sign♐Sagittarius
Place of BirthSaitama, Japan
Career Span2012 – Present (15 yrs)
Known Credits38 Titles
Official Links
Official WebsiteIMDbWWikidata
ActingPopularity Score 1.1

Koji Seki

Also known as:Kouji Seki関 幸司Kōji Seki
Total Works

38

0 movies • 0 shows

Avg Rating

7.8 / 10

across rated releases

Box Office

—

worldwide gross

Global Reach

#1

TMDB star index

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.

Signature Roles & Milestones

JUJUTSU KAISEN
8.6
JUJUTSU KAISEN
2020•anime
as Fumi's Father (voice)
SPY x FAMILY
8.5
SPY x FAMILY
2022•anime
as Rahden (voice)
Sword Art Online
8.1
Sword Art Online
2012•anime
as Technical Staff (voice)
Haikyu!!
8.6
Haikyu!!
2014•anime
as Kai Akakura (voice)

Photos & Headshots3

Full Filmography & Credits

Showing 38 titles featuring Koji Seki

JUJUTSU KAISEN
8.6
JUJUTSU KAISEN
2020•anime

as Fumi's Father (voice)

SPY x FAMILY
8.5
SPY x FAMILY
2022•anime

as Rahden (voice)

Sword Art Online
8.1
Sword Art Online
2012•anime

as Technical Staff (voice)

Haikyu!!
8.6
Haikyu!!
2014•anime

as Kai Akakura (voice)

Frieren: Beyond Journey's End
8.8

as Villager (voice)

Dan Da Dan
8.5
Dan Da Dan
2024•anime

as TV Station Producer (voice)

The Quintessential Quintuplets
8.4

as Teacher (voice)

BLUE LOCK
8.3
BLUE LOCK
2022•anime

as Reporter B (voice)

Tower of God
8.1
Tower of God
2020•anime

as (voice)

Star Wars: Visions
7.1
Star Wars: Visions
2021•anime

as Eno's Father / Resistance Member (voice)

I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too
8.2

as (voice)

HAIKYU!! The Dumpster Battle
7.8

as Patient (voice)

I've Been Killing Slimes for 300 Years and Maxed Out My Level
7.8

as Store Customer E (voice)

Sword Art Online the Movie – Progressive – Scherzo of Deep Night
7.7

as Naijan (voice)

Daily Lives of High School Boys
8.0

as Basketball Guy (voice)

NieR:Automata Ver1.1a
8.1

as Kingdom Citizen (voice)

Yashahime: Princess Half-Demon
8.3

as Thug (voice)

March Comes In Like a Lion
8.0

as Authorized Person 3 (voice)

You and I Are Polar Opposites
8.6

as Convenience Store Manager (voice)

Orb: On the Movements of the Earth
8.1

as Knight (voice)

ID: INVADED
7.2
ID: INVADED
2020•anime

as Staff (voice)

The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far
7.1

as Sebas (voice)

Mission: Yozakura Family
7.5

as Detective (voice)

Remake Our Life!
7.3
Remake Our Life!
2021•anime

as (voice)

Let This Grieving Soul Retire
6.6

as Greg Zangief (voice)

Super Cub
7.3
Super Cub
2021•anime

as Clerk (voice)

Umamusume: Pretty Derby - Beginning of a New Era
8.5

as (voice)

Star Wars: Visions Presents - The Ninth Jedi
7.3

as Satellite Digger (voice)

Welcome to the Outcast's Restaurant!
7.4

as Merchant (voice)

Tearmoon Empire
7.1
Tearmoon Empire
2023•anime

as Priest (voice)

Akane-banashi
7.8
Akane-banashi
2026•anime

as Chusuke Chuotei (voice)

DAN DA DAN: First Encounter
7.5

as TV Station Producer (voice)

Solo Camping for Two
7.5

as Izakaya Manager (voice)

Catch Me at the Ballpark!
7.8

as Kaiser (voice)

Summer Pockets
6.9
Summer Pockets
2025•anime

as (voice)

Puniru Is a Kawaii Slime
7.7

as Academic Researchers (voice)

Inexpressive Kashiwada and Expressive Oota
7.2

as Mathematics Teacher (voice)

Turkey! Time to Strike
6.3

as Samurai (voice)