Cillian O'Sullivan
Born in New York to Irish parents, O'Sullivan's family moved back to Ireland when he was a child, and he attended school in Ballinlough, Cork. From an Irish-speaking family, his first television roles were in Irish language productions for TG4. After roles in several BBC productions, and playing Bobby Storey in the 2017 film Maze, O'Sullivan moved to the US, obtaining recurring roles in NBC and Netflix series. Misty Button, in which he had a lead role, won the "best narrative feature" at the 2019 San Luis Obispo International Film Festival.
In 2021, he filmed a Sky Studios series titled Then You Run, which was released in July 2023. As of 2022, O'Sullivan was reportedly working on a film titled The Lost Princess.
In 2025, O'Sullivan appeared as Devlin, an Irish gangster, in Daredevil: Born Again, and as Dr. Roger Korby in the third season of Star Trek: Strange New Worlds.
Biography from the Wikipedia article Cillian O'Sullivan. Licensed under CC-BY-SA. Full list of contributors on Wikipedia.
Known For
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Happy's Place
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Lucky
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Fear Agent
Interstellar invaders. Time travel. Clones of clones of clones, and lots of whiskey. Whether he's battling the scourge of space, going back in time to stop the alien invasion that changed earth forever, or winning his ex-wife back, there's nothing that Heath Huston won't do to try to right the wrongs and get his family back. He is, after all, the last Fear Agent.
American Horror Story
American Horror Story is an horror television anthology series. Each season is conceived as a self-contained miniseries, following a disparate set of characters and settings, and a storyline with its own beginning, middle, and end. While some actors appear for more than one year, they play completely different roles in each season.