Morgan Le Fay from *Dimidium Volume II: Lightning* by Sterling Davis.

The Queen of the Fae, half-sister of King Arthur Pendragon and mother of Mordred Pendragon.

Formerly an enemy of King Arthur before realizing the warlock, Merlin was the true evil threatening Britain and made amends after he was imprisoned with her and the Lady of the Lake, Nimue's combined magical efforts prior to an oversight allowing him to manipulate the British populace to turn against Camelot.