There has never been a real black knight. Legends about the Black Knight date back to medieval times. The Black Knight was a mysterious and terrifying figure usually associated with evil. He was often portrayed as a knight in black armor, with a shield that bore a black cross. In some legends, the Black Knight was said to be a ghost, or a demon, while in others he was a real human being. The Black Knight is a popular character in folklore, and has appeared in many works of literature, film, and television.