William Albert "Billy" Burke (born November 25, 1966) is an American actor. He is known for his role as Charlie Swan in Twilight and its sequels. He is also known for his role as Gary Matheson in the Season 2 of 24. In 2011, he played Cesaire in Red Riding Hood. In 2012, he was cast as the lead character, Miles Matheson, in the NBC science-fiction series Revolution. He currently stars in Zoo.