Frank Grillo

Frank Anthony Grillo (born June 8, 1965) is an American actor and martial artist. He is known for playing Brock Rumlow / Crossbones in the superhero franchise Marvel Cinematic Universe (MCU), Sergeant Leo Barnes in The Purge franchise, and Rick Flag Sr. in the DC Universe (DCU). He has also appeared in Warrior (2011), The Grey (2011), End of Watch (2012), Zero Dark Thirty (2012), Wolf Warrior 2 and Wheelman (both 2017), and Boss Level (2020).

Grillo's television work includes the lead role in Kingdom (2014–2017) as well as recurring roles in Battery Park (2000), For the People (2002–2003), The Shield (2002–2003), Prison Break (2005–2006), Blind Justice (2005), The Kill Point (2007), Billions (2020), Tulsa King (2024), Peacemaker (2025), and Guiding Light (1996-1999).