Sir Lancelot was a knight at the round table in Arthurian legends. He was actually the first knight assigned the round table. The reason that he fit so well into the Arthurian legends is that he is so similar to King Arthur. Lancelot was said to be the Kindest, Purest, And the bravest knight at the round table. But it was also said that Sir Lancelot had an affair with Queen Guinevere which was King Arthur's wife.