Cillian O'Sullivan
Biography
No biography available.
Gallery
Known For
Acting History
2025
The Lost Princess as Alec Touati
2025Daredevil: Born Again as Devlin
2024The Boy That Never Was as Dave Garrick
2023Then You Run as Orin
2022Star Trek: Strange New Worlds as Dr. Roger Korby
2022In From the Cold as Chauncey
2019Misty Button as James
2017Maze as Bobby
2016Bull as Nathan Alexander
2014Halo: Nightfall as Christian Ramsey (uncredited)
2014Chicago P.D. as Shane Sullivan
2013The Blacklist as Skip Sutherland
2013Vikings as Eirik
2008Uncle Bill's Barrel as Tom Lynch
2008Seacht as Michael