The principal villain in C.S. Lewis’s The Lion, the Witch and the Wardrobe is the White Witch.
The White Witch, also called Jadis, has imposed a long winter on Narnia and claims authority over the land. Her rule is associated with fear, enchantment, and the absence of Christmas. Edmund Pevensie is tempted by her promises of sweets and status before discovering the danger behind them.
Aslan and the children oppose the Witch’s power. The story’s climax centers on the Deep Magic and Aslan’s sacrifice, followed by his return and the defeat of the Witch’s forces. Lewis uses fairy-tale conventions while also building a Christian allegorical pattern around sacrifice and restoration.
The Lady of the Green Kirtle is a different antagonist from The Silver Chair. Jadis also appears in The Magician’s Nephew, where her earlier identity and role in Narnian history are explored.