Jadis

Jadis is a fictional character and the main antagonist of The Lion, the Witch and the Wardrobe (1950) and The Magician's Nephew (1955) in C. S. Lewis's series, The Chronicles of Narnia. She is commonly referred to as the White Witch in The Lion, the Witch and the Wardrobe, as she is the Witch who froze Narnia in the Hundred Years Winter.