In Arthurian legend, the Lady of the Lake is a pivotal figure associated with Excalibur, the legendary sword of King Arthur. She appears in various tales, often portrayed as a mystical enchantress or a guardian of the lake. Her role includes bestowing Excalibur upon Arthur, signifying his right to rule. The Lady of the Lake represents the themes of magic, mystery, and the intertwining of fate and destiny within Arthurian lore.