Seth Gilliam (born November 5, 1968) is a seasoned American actor whose career spans over three decades. A graduate of SUNY Purchase (BFA, 1990), he rose to prominence with his compelling roles as Sgt. Ellis Carver on The Wire, Clayton Hughes on Oz, Dr. Alan Deaton on Teen Wolf, and Father Gabriel Stokes on The Walking Dead—a recurring character through the final season. His film credits include Courage Under Fire and Starship Troopers, while also garnering acclaim on stage with performances in Shakespearean productions like Othello . Beyond his acting, Gilliam is known for his dedication to theater and direct engagement with fans via social media.