Cillian O'Sullivan
Acting • AGE 36
Acting
The Lost Princess
Alec Touati
2025
Daredevil: Born Again
Devlin
2025
The Boy That Never Was
Dave Garrick
2024
Then You Run
Orin
2023
Star Trek: Strange New Worlds
Dr. Roger Korby
2022
In From the Cold
Chauncey
2022
FBI: Most Wanted
Scot Weitzen
2020
Misty Button
James
2019
Maze
Bobby
2017
Bull
Nathan Alexander
2016
Halo: Nightfall
Christian Ramsey (uncredited)
2014
Chicago P.D.
Shane Sullivan
2014
The Blacklist
Skip Sutherland
2013
Vikings
Eirik
2013