In the legends of King Arthur, the mythical being said to inhabit Avalon is Morgan le Fay. She is often portrayed as a powerful sorceress with deep connections to the mystical and the supernatural. Morgan embodies the duality of femininity, representing both healing and deceit. Her presence in Avalon ties to themes of magic, transformation, and the afterlife, enriching the Arthurian legends with layers of complexity in character relationships and the interplay of fate and free will.