Actors
All filmographies
Movies
Explore every movie
Series
Most watched shows
Play
Trivia, challenges & battles
🍿
Home Actors Movies Series Play
Language: English
Actor Evolution
122K subscribers
Koji Seki
Koji Seki

Koji Seki

Actor · Voice actor
43 years (Nov 25, 1982)Saitama, Japan
Koji Seki is a dependable Japanese actor, better known to casting directors than to the public. 'Yashahime: Princess Half-Demon' is a second title that reaches an audience. He is 43 years old. Animation accounts for a large share of the titles. At 38 titles, the filmography is a substantial one. In 'I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too' he has one of the more visible roles of the career.
Koji Seki is a dependable Japanese actor, better known to casting directors than to the public. 'Yashahime: Princess Half-Demon' is a second title that reaches an audience. He is 43 years old. Animation accounts for a large share of the titles. At 38 titles, the filmography is a substantial one. In 'I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too' he has one of the more visible roles of the career.
34 TV Shows
Latest Trailers
DAN DA DAN: First Encounter
Watch Trailer
DAN DA DAN: First Encounter
Full Filmography
Star Wars: Visions Presents - The Ninth Jedi
Satellite Digger (voice)
★ 7.3
2026Season 1
Akane-banashi
Chusuke Chuotei (voice) · 1 episode
★ 7.8
2026–
You and I Are Polar Opposites
Convenience Store Manager (voice)
★ 8.6
2026Season 1
Star Wars: Visions
Eno's Father / Resistance Member (voice)
★ 7.1
2025Season 3
Inexpressive Kashiwada and Expressive Oota
Mathematics Teacher (voice)
★ 7.2
2025Season 1
SPY x FAMILY
Rahden (voice)
★ 8.5
2025Season 3
Solo Camping for Two
Izakaya Manager (voice)
★ 7.5
2025Season 1
Turkey! Time to Strike
Samurai (voice)
★ 6.3
2025Season 1
Welcome to the Outcast's Restaurant!
Merchant (voice)
★ 7.4
2025Season 1
Frequently Asked Questions
How old is Koji Seki and where are they from?
Koji Seki is 43 years old, born on November 25, 1982 in Saitama, Japan.
What are the most famous roles of Koji Seki?
Koji Seki is best known for roles in HAIKYU!! The Dumpster Battle, Sword Art Online the Movie – Progressive – Scherzo of Deep Night, Umamusume: Pretty Derby - Beginning of a New Era.
How many movies has Koji Seki been in?
Over a 4-year career (since 2022), Koji Seki has appeared in 4 movies and 34 TV shows.
What was Koji Seki's first movie?
The career of Koji Seki began with Sword Art Online the Movie – Progressive – Scherzo of Deep Night (2022).
What is Koji Seki's most recent movie or series?
Koji Seki's most recent release is Star Wars: Visions Presents - The Ninth Jedi, which premiered on August 5, 2026.
What TV shows has Koji Seki appeared in?
On television, Koji Seki has appeared in JUJUTSU KAISEN, SPY x FAMILY, Sword Art Online, Haikyu!!.
Loading…
Koji Seki
Koji Seki
1982-11-25 · 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.

Cookies for stats and ads. They are optional.

Known for
—