Lady of the Green Kirtle

The Lady of the Green Kirtle, also known as the Queen of Underland, is a character in The Silver Chair by C. S. Lewis, appearing as the main villain. She is an evil witch who has enslaved Prince Rilian of Narnia and a horde of Earthmen (gnomes) and plans to use them in a plot to take over Narnia. Her plans are foiled by three friends of Aslan Eustace Scrubb, Jill Pole, and Puddleglum. She is given very little back-story and it is never made clear who she really is, or where she came from. She seems to prefer acting indirectly to achieve her ends, as demonstrated when she sends Eustace, Jill, and Puddleglum to the giants' castle for the Autumn Feast, and bids them explain that she salutes the giants by them. She knows full well that "man-pies" are a traditional dish for this feast and this is an easy way to get rid of her adversaries. She also plans to attack Narnia from underground, using the enslaved prince as her general, and then rule Narnia perhaps through him as a puppet king. ... full article at wikipedia