Xander Berkeley is an American actor. He started acting in the 1980s, debuting in the 1981 film Mommie Dearest. He later had roles in the films Tag: The Assassination Game, Sid and Nancy, and The Fabulous Baker Boys, among others. In the ’90s, he appeared in the movies Internal Affairs, The Grifters, The Rookie, Terminator 2: Judgment Day, A Few Good Men, Apollo 13, and Heat, to name a few. In the 2000s, he became known for his role as George Mason in the Fox series 24. The following decade, he starred as Percy in The CW series Nikita, as well as played Liam McLean in Being Human. He went on to play Magistrate Hale in Salem and Gregory in The Walking Dead.