Television:
* Battlestar Galactica (2004-2009): He played the role of Chief Galen Tyrol, a central character in this reimagined sci-fi series.
* The 100 (2014-2020): Played the recurring character of "The Pike" in this post-apocalyptic drama.
* iZombie (2015-2019): Had a guest role as "Captain Reese" in this comedic horror series.
* Arrow (2012-2020): Appeared as "Sparky" in multiple episodes of this superhero drama.
* Supernatural (2005-2020): Played the role of "The Trickster" in multiple episodes of this fantasy horror series.
* The X-Files (2016-2018): Appeared in the episode "My Struggle III" as a "Resistance Fighter."
* Stargate SG-1 (1997-2007): Played "Colonel Davis" in the episode "The Other Guys."
* Smallville (2001-2011): Played "Dr. Franklin" in the episode "Legion."
* Andromeda (2000-2005): A recurring role as "Tyr Anasazi."
* Continuum (2012-2015): Had a guest role as "Agent Reynolds."
* The Good Doctor (2017-present): Recurring role as "Dr. Andrews."
Film:
* The Expanse (2015-2022): Played the role of "Camina Drummer" in this sci-fi series based on the book series by James S.A. Corey.
* The Day the Earth Stood Still (2008): Played the role of "Captain Parker."
* The Tournament (2009): Played the role of "The Surgeon."
* Final Destination 2 (2003): Played the role of "Tim Carpenter."
* The Killing of a Sacred Deer (2017): Played the role of "The Surgeon."
* The Last Days on Mars (2013): Played the role of "Dr. Charles Brunel."
* The Messengers (2007): Played the role of "Detective Dan."
This list is not exhaustive, but it includes some of Aaron Douglas's most recognizable and noteworthy roles. He continues to be a busy and talented actor, working on both television and film projects.