Proper noun
Morgaine
Morgan le Fay.
Morgaine frees the Destroyer, to the Doctor's dismay. Source: Internet
Meanwhile, Morgaine has sent Mordred and his knights after the Doctor and the others, with orders to take Excalibur and kill any who resist. Source: Internet
It all goes downhill from there: He refuses to boil water, contracts a virus, and can’t fight as Morgaine uses her powers of transfiguration to turn him into a weapon. Source: Internet