Morgan le Fay is the sister of King Arthur and mother of Gawain, Agravain, Gaheris, Gareth and Mordred.

Morgan greatly hates her sister and possesses a great obsession for Mordred to take the throne from her. She changed greatly throughout her life from a "fine lady" to a "frightening thing" according to Kay, and he describes it as if she had three women inside of her. Having started with the "innocence of a fairy", she became "as magnificent as a warrior maiden", and "then suddenly possessed the brutality of a witch." Kay believes she may have had similar burdening circumstances as Artoria due to their parentage.