Cillian O'Sullivan

Biography

Career Overview

Cillian O'Sullivan has 12 screen credits in a career dating back to 2008. Signature works include The Lost Princess, Misty Button, Uncle Bill's Barrel. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.

Personal Facts

Known For

Acting

Gender

male

Known Credits

12

Birth Date

1989-09-28 00:00:00

Birth Place

New York, USA

Known For

• 

  The Lost Princess
• 

  Misty Button
• Uncle Bill's Barrel
• 

  Maze

Frequent Collaborators

• Gary Dourdan (1 collaborations)
• Robert Knepper (1 collaborations)
• Soraya Azzabi (1 collaborations)
• Eric Roberts (1 collaborations)
• Irma Lake (1 collaborations)
• Luka Peroš (1 collaborations)
• Kacey Mottet Klein (1 collaborations)
• Mourad Zaoui (1 collaborations)
• Julian Mileta (1 collaborations)
• Michael Patrick Lane (1 collaborations)

Credits

• actors (12 credits)

  • The Lost Princess

    Alec Touati

    actor

    actors
    2025
  • Daredevil: Born Again

    - With Interest (2025) ... Devlin actor actors

    - The Hollow of His Hand (2025) ... Devlin actor actors

    - Heaven's Half Hour (2025) ... Devlin actor actors
    2025
  • The Boy That Never Was

    - Episode 4 (2024) ... Dave Garrick actor actors

    - Episode 3 (2024) ... Dave Garrick actor actors

    - Episode 2 (2024) ... Dave Garrick actor actors
    2024
  • Star Trek: Strange New Worlds

    - New Life and New Civilizations (2025) ... Dr. Roger Korby actor actors

    - Four-and-a-Half Vulcans (2025) ... Dr. Roger Korby actor actors

    - Through the Lens of Time (2025) ... Dr. Roger Korby actor actors

    - Wedding Bell Blues (2025) ... Dr. Roger Korby actor actors
    2022
  • Misty Button

    James

    actor

    actors
    2019
  • Maze

    Bobby

    actor

    actors
    2017
  • Bull

    - Billboard Justice (2019) ... Nathan Alexander actor actors
    2016
  • Halo: Nightfall

    Christian Ramsey (uncredited)

    actor

    actors
    2014
  • Chicago P.D.

    - Intimate Violence (2020) ... Shane Sullivan actor actors
    2014
  • The Blacklist

    - The Hawaladar (2019) ... Skip Sutherland actor actors

    - Hannah Hayes (2019) ... Skip Sutherland actor actors
    2013
  • Vikings

    - A Good Treason (2016) ... Eirik actor actors
    2013
  • Uncle Bill's Barrel

    Tom Lynch

    actor

    actors
    2008