Frank Anthony Grillois an American actor known for his roles in films such as Warrior(2011),The Grey(2012),End of Watch(2012) andZero Dark Thirty(2012). He had his first leading role inThe Purge: Anarchy(2014), portraying Sergeant Leo Barnes; he reprises this role inThe Purge: Election Year(2016). He also plays theMarvelsupervillainBrock Rumlow / Crossbonesin theMarvel Cinematic Universe. He has appeared as the character in Captain America: The Winter Soldier (2014), Captain America: Civil War (2016), and Avengers: Endgame (2019). Grillo was born June 8, 1965 inNew York Cityas the oldest of three children, and is of Italian heritage. He graduated from New York Universitywith a business degree and spent a year onWall Streetbefore being asked to do aMiller Genuine Draft beer commercial.