Kousuke Oonishi (大西 弘祐, Ōnishi Kōsuke, born May 7, 1991) is a Japanese voice actor (seiyū) from Saitama prefecture who is associated with Arts Vision. He graduated from the Nihon Narration Engi Kenkyūjo (Japan Narration Acting School). His hobbies and special skills are puns and singing.

KNOWN FOR

Sword Art Online
2014
The Ancient Magus' Bride
2023
Chainsaw Man
2022
Cells at Work!
2021
My Happy Marriage
2025
Campfire Cooking in Another World with My Absurd Skill
2023
The Café Terrace and Its Goddesses
2023
The God of High School
2020
Those Snow White Notes
2021
The Faraway Paladin
2021
Vinland Saga
2019
Terminator Zero
2024

FILMOGRAPHY

All
Movies
TV
Acting
64
2025
My Happy Marriage
as (voice)
2025
Haigakura
as Sanu's Companion (voice)
2024
Terminator Zero
as Paramedic (voice)
2024
Haigakura
as Dragon Warrior (voice)
2024
Haigakura
as Islander (voice)
2024
Haigakura
as Child (voice)
2024
Haigakura
as Kashi (voice)
2024
Haigakura
as Soldier (voice)
2024
Vampire Dormitory
as Guest E (voice)
2023
Campfire Cooking in Another World with My Absurd Skill
as Adventurer C (voice)
2023
Campfire Cooking in Another World with My Absurd Skill
as City ​​People (voice)
2023
Campfire Cooking in Another World with My Absurd Skill
as Soldier B (voice)
2023
The Ancient Magus' Bride
as Martin Chandler (voice)
2023
The Café Terrace and Its Goddesses
as Fishmonger's Companion (voice)
2023
The Ancient Magus' Bride
as Student A (voice)
2023
The Ancient Magus' Bride
as Transfigured Sorcerer (voice)
2023
My Daemon
as Soldier 3 (voice)
2023
My Daemon
as Soldier 2 (voice)
2023
My Daemon
as Soldiers (voice)
2023
The Ancient Magus' Bride
as Chise's Classmate (voice)
2023
The Ancient Magus' Bride
as Gatekeeper (voice)
2023
Reborn to Master the Blade: From Hero-King to Extraordinary Squire ♀
as Knight (voice)
2023
Tearmoon Empire
as Man (voice)
2023
Tearmoon Empire
as Soldier (voice)
2023
Tearmoon Empire
as Student (voice)
2023
Tearmoon Empire
as Referee (voice)
2022
Bibliophile Princess
as Man at the Market (voice)
2022
Chainsaw Man
as Henchman C (voice)
2022
The Heike Story
as Taira Soldier 1 (voice)
2021
Jujutsu Kaisen 0
as Passerby (voice)
2021
The Faraway Paladin
as Villager (voice)
2021
The Faraway Paladin
as Adventurer (voice)
2021
The Faraway Paladin
as Knight (voice)
2021
The Saint's Magic Power Is Omnipotent
as Young officer (voice)
2021
The Saint's Magic Power Is Omnipotent
as Chef (voice)
2021
The Saint's Magic Power Is Omnipotent
as Soldier (voice)
2021
The Saint's Magic Power Is Omnipotent
as Civil official (voice)
2021
The Saint's Magic Power Is Omnipotent
as Alchemist (voice)
2021
Cells at Work!
as Intestinal Epithelial Cell 1 (voice)
2021
Those Snow White Notes
as Ushio's Male Friend (voice)
2021
Those Snow White Notes
as Jiro Fujiwara (voice)
2020
The God of High School
as Doctor (voice)
2020
The God of High School
as Store Manager (voice)
2020
The God of High School
as Delinquent (voice)
2020
The God of High School
as Guard (voice)
2020
The God of High School
as YES MAN (voice)
2020
The God of High School
as Secretary (voice)
2020
The God of High School
as Spectator (voice)
2020
Noblesse
as M-21 (voice)
2020
Arte
as Apprentice (voice)
2019
Vinland Saga
as Member of Askeladd's Mercenaries (voice)
2019
Vinland Saga
as Interpreter of Jabbathe's Forces (voice)
2019
Vinland Saga
as English Soldier (voice)
2019
Vinland Saga
as Viking of Thorkell's Troops (voice)
2019
Vinland Saga
as Soldier of the English Army (voice)
2019
Domestic Girlfriend
as Youth A (voice)
2018
The Ancient Magus' Bride
as Man from the Neighborhood (voice)
2018
The Ancient Magus' Bride
as Buyer (voice)
2018
The Ancient Magus' Bride
as Person from Joseph's Village (voice)
2018
We Rent Tsukumogami
as Customer (voice)
2017
Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria
as Member (voice)
2016
JOKER GAME
as Corporal Nobuteru Miyata (voice)
2014
Sword Art Online
as Player (voice)
2013
Flowers of Evil
as Class 1, Year 2 (voice)