Cillian O'Sullivan
15
Acting Credits
Acting
TV
Vikings
as Eirik
2013
TV
The Blacklist
as Skip Sutherland
2013
TV
Chicago P.D.
as Shane Sullivan
2014
TV
Daredevil: Born Again
as Devlin
2025
TV
Star Trek: Strange New Worlds
as Dr. Roger Korby
2022
TV
Bull
as Nathan Alexander
2016
Movie
Halo: Nightfall
as Christian Ramsey (uncredited)
2014
TV
In From the Cold
as Chauncey
2022
Movie
Maze
as Bobby
2017
Movie
The Lost Princess
as Alec Touati
2025
TV
Then You Run
as Orin
2023
TV
The Boy That Never Was
as Dave Garrick
2024
Movie
Misty Button
as James
2019
Movie
Uncle Bill's Barrel
as Tom Lynch
2008
TV
Seacht
as Michael
2008