In April 2018, he was announced as part of the cast of Star Wars Resistance as Orka. He voiced Pintu Son-El in the Star Wars: The Clone Wars seventh season episode "Gone with a Trace."
While on Saturday Night Live, Monyhan was a significant part of three Star Wars-related sketches in the lead-up to Star Wars: Episode VII The Force Awakens. In the November 21, 2015 episode, during a fictitious audition reel in which J.J. Abrams, Daisy Ridley and John Boyega appeared as themselves, he portrayed George Lucas, as well as Danny DeVito auditioning for the role of BB-8. In the December 12, 2015 episode, he appeared in a fictitious Force Awakens toy commercial, playing a fan/collector who is horrified to see children using the potentially priceless collectibles for their intended purpose. In the January 15, 2016 episode, hosted by Adam Driver, he appeared as a First Order Stormtrooper in the Undercover Boss sketch in which Driver reprised his role as Kylo Ren and went undercover as the radar technician "Matt" to learn more about the employees of Starkiller Base.
- Star Wars Resistance — "The Recruit"
- Star Wars Resistance — "The Triple Dark"
- Star Wars Resistance — "The Children from Tehar"
- Star Wars Resistance — "Synara's Score"
- Star Wars Resistance — "Dangerous Business"
- Star Wars Resistance — "No Escape: Part 1"
- Star Wars Resistance — "Into the Unknown"
- Star Wars Resistance — "From Beneath"
- Star Wars Resistance — "The Escape"
- Star Wars: The Clone Wars — "Gone with a Trace"
- Star Wars: Tales from the Galaxy's Edge
- "Launchpad" — Star Wars Insider 199
- Star Wars: The Bad Batch — "Cornered"
- Star Wars: Tales from the Galaxy's Edge – Last Call
- Star Wars: Visions — "Tatooine Rhapsody"