Frank Grillo is an actor known for his roles in films such as Warrior, The Grey, End of Watch and Zero Dark Thirty. He had his first leading role in the action horror film The Purge: Anarchy, portraying Sergeant Leo Barnes, a role he reprised in The Purge: Election Year. He also plays the Marvel supervillain Brock Rumlow / Crossbones in the Marvel Cinematic Universe.

Frank's television work includes recurring roles in the series Battery Park, For the People, The Shield, Prison Break, Blind Justice, and The Kill Point. He has also starred in The Gates, and in Kingdom and played Hart Jessup in the soap opera The Guiding Light,

He is most recently known for his role as "Big Daddy" in the mega-hit Chinese action movie Wolf Warriors 2.

Frank has been a long-time supporter of STOMP Out Bullying. Hear his anti-bullying message.