Mordred is a character from Arthurian legend. In some of the legends, he betrayed Arthur and killed him. He is said to be Arthur's son by his half-sister Morgaine (also called Morgan or Morgana). Mordred was born at Caerlon. Mordred was also said to have been killed by Arthur after he stole Excalibur from him. He was killed while Arthur was fatally wounded. His name comes from old Welsh. He was not a knight of the round table. In some legends he is a chimera made by Morgana with Arthur's blood and a range of magic's, Mordred in multiple legends was know to be the thief of king Arthur's second sword Clarent known as Arthur's sword of peace this being the reason why it is not as well known as Excalibur Arthur's sword of war which he used to protect Camelot, Clarent was a sword that would be percent whenever Arthur would be making a covenant of peace this being change once in the hands of Morderd using it to mortally wound Arthur just before being cut down by his farther Arthur