The Legend of Prince Valiant season with the potential to become a major antagonist, is forgotten about until the very end of the second season. The characters of King Arthur, Queen Guinevere, Merlin, Sir Gawain, Sir Mordred, Lady Morgana, and Sir Kay are all major characters with origins in Arthurian legend. Also pulled from traditional lore are Camelot, the Knights of the Round Table, and Arthur's sword Excalibur. The general chivalric principles Camelot is famous for have been codified on this series as the New Order. In addition, the second-season episode "The Black Rose" features the characters of King Lot, King Uther, and Queen Igraine
Lady of the Lake mother of Jesus as the Lady of the Lake, evidencing fusion between Arthurian legend and middle-Christian history. Alfred, Lord Tennyson adapted several stories of the Lady of the Lake for his 1859–1885 poetic cycle "Idylls of the King". He too splits her into two characters; Viviane is a deceitful villain who ensnares Merlin, while the Lady of the Lake is a benevolent figure who raises Lancelot and gives Arthur his sword. Some other authors choose to emphasize a single character. Modern authors of Arthurian fiction adapt the Lady of the Lake legend in various ways, often using two or more