Cillian O'SullivanCillian O'Sullivan is an actor, born 1989.Movies (3)The Lost Princess (2025)Halo: Nightfall (2014)Maze (2017)TV (2)Star Trek: Strange New Worlds (2022)Daredevil: Born Again (2025)Genres Cillian O'Sullivan works inscience fiction television programactionaction-adventureadventurecrimedrama