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Cillian O'Sullivan
Acting
Born September 28, 1989 · New York, USA
Also known as Cillian O'Suilleabhain · Cillian Ó Súilleabháin
Filmography13 titles

Chicago P.D.
2014as Shane Sullivan
2014as Shane Sullivan

Daredevil: Born Again
2025as Devlin
2025as Devlin

Vikings
2013as Eirik
2013as Eirik

Star Trek: Strange New Worlds
2022as Dr. Roger Korby
2022as Dr. Roger Korby

FBI: Most Wanted
2020as Scot Weitzen
2020as Scot Weitzen

The Blacklist
2013as Skip Sutherland
2013as Skip Sutherland

Bull
2016as Nathan Alexander
2016as Nathan Alexander

In from the Cold
2022as Chauncey
2022as Chauncey

The Lost Princess
2025as Alec Touati
2025as Alec Touati

The Boy That Never Was
as Dave Garrick
as Dave Garrick

Maze
2017as Bobby
2017as Bobby

Misty Button
2019as James
2019as James

Then You Run
2023as Orin
2023as Orin