Cillian O'Sullivan
ActingCillian O'Sullivan Movies & Career Overview
The filmography of Cillian O'Sullivan reflects a career marked by diverse experimentation. Across 5 major appearances, the actor has built a reputation through performances in multiple genres and storytelling styles.
Dominant Genre
A large portion of Cillian O'Sullivan's work falls within the Action genre, where audiences tend to respond most strongly to their on-screen presence.
Success Ratio
Approximately 20% of Cillian O'Sullivan's films maintain ratings above 6.5, indicating a consistent level of audience approval.
One of the most highly rated entries in their career remains Halo: Nightfall, which stands out as a key performance.
Best Cillian O'Sullivan Movies Ranked
Must-watch hits from Cillian O'Sullivan's career based on audience ratings.
Full Filmography
Every movie Cillian O'Sullivan has appeared in, with audience ratings and verdicts.
| Year | Movie | Character | Success | More |
|---|---|---|---|---|
| 2025 | The Lost Princess | Alec Touati | Average | Similar → |
| 2019 | Misty Button | James | Flop | Similar → |
| 2017 | Maze | Bobby | Average | Similar → |
| 2014 | Halo: Nightfall | Christian Ramsey (uncredited) | Hit | Similar → |
| 2008 | Uncle Bill's Barrel | Tom Lynch | Flop | Similar → |
Cillian O'Sullivan - Frequently Asked Questions
What is the best movie of Cillian O'Sullivan?
According to audience ratings, the best movie starring Cillian O'Sullivan is "Halo: Nightfall" with a rating of 6.8/10.
How many movies has Cillian O'Sullivan acted in?
Cillian O'Sullivan has been featured in at least 5 major films throughout their career.
What are some other popular movies by Cillian O'Sullivan?
Other notable films include "The Lost Princess", "Maze", and "Misty Button".