Profile photo of Dermot Mulroney

Dermot Mulroney

Dermot Patrick Mulroney (born October 31, 1963) is an American actor and musician. He is known for his roles in romantic comedy, western, and drama films. Mulroney is known for his work in various films such as Long Gone (1987), Young Guns (1988), Staying Together (1989), Where the Day Takes You (1992), Point of No Return (1993), The Last Outlaw (1993), Angels in the Outfield (1994), My Best Friend's Wedding (1997), About Schmidt (2002), The Wedding Date (2005), Zodiac (2007), August: Osage County (2013), Insidious: Chapter 3 (2015), Scream VI, and Anyone but You (2023). Mulroney played the main antagonist Francis Gibson in NBC's Crisis (2014), Dr. Walter Wallace in Pure Genius (2016–2017), Sean Pierce in Showtime's Shameless (2015–2017), and Bobby Sheridan in USA's The Purge (2018–2019).

Filmography

2026
Night Patrol

as Sarge

Movie
2025
Long Shadows

as Dallas Garrett

Movie
2025
Guns & Moses

as Alan Rosner

Movie
2025
Killing Mary Sue

as Bradley Weiner

Movie
2023
Anyone But You

as Leo

Movie
2023
Scream VI

as Detective Bailey

Movie
2012
The Grey

as Jerome Talget

Movie
2007
Zodiac

as Martin Lee

Movie
2005
The Family Stone

as Everett Stone

Movie
1997
My Best Friend's Wedding

as Michael O'Neal

Movie
1991
Career Opportunities

as Nestor Pyle

Movie
1988
Young Guns

as Dirty Steve Stephens

Movie
1986
Shattered: If Your Kid's on Drugs

as Lane

Movie
2025
The Hunting Wives

as Jed Banks

TV Show
2012
Chicago Fire

as Battalion Chief Dom Pascal

TV Show
2011
New Girl

as Russell Schiller

TV Show
2011
Shameless

as Sean Pierce

TV Show