Emily Swallow (born December 18, 1979) is an American actress. She is best known for her role as The Armorer in the Star Wars series The Mandalorian. She is also known for her roles as Kim Fischer in The Mentalist and as Amara / The Darkness in the 11th season of Supernatural. She also had a minor role as Emily in the video game The Last of Us Part II. (Via Wikipedia)