A deadly yet beautiful sorceress, The Lotgk assumes the form of a serpent many times to accomplish her own evil deeds, and desires to rule Narnia. Appearing as a poisonous worm, she fatally bit Rillian's mother, the Queen, thus sending him on a tireless quest to avenge his mother's killer. Then assuming a beautiful and fair form, she seduced Rillian and eventually laid an enchantment on him and brought him back to her underground kingdom, where he remained for ten years. There she enslaved the Earthmen to serve her, and devised a plan to dig a tunnel up to the surface, bring her great army forth and then rule Narnia at first through Rillian, but later by her terrible self. She meets Puddleglum, Eustace and Jill in Ettensmoor, and advises them to stay at Harfang, knowing that the Giants there would eat them. So it was a great surprise when she returned to her home a short time later and found the travelers there, Rillian free of his enchantment, and the Silver Chair destroyed. She attempted to lay a spell on the Narnians to make them forget about Narnia, but it was foiled by Puddleglum. She then assumed the form of a serpent and while trying to kill them, was killed by Eustace, Puddleglum and Rillian. At her death the spell laid on the Earthmen was lifted, and her kingdom was destroyed.