The White Witch is the usurping and self-proclaimed Queen of Narnia. She is cruel and power-hungry and keeps the land encased in a perpetual winter. If anyone defies her power, she turns them to stone with her magic wand. She represents the devil and evil in general.
Silvermistwaterfairy says: If you have read The Magician's Nephew, then you should know Jadis, the evil queen who destroyed all of Charn except herself. The White which is the same Jadis and she is not human, she is half Jinn (Adam's first wife was Jinn) and half giantess.
Tilda Swinton played the White Witch in the first movie: The Lion the Witch and the Wardrobe.
The White Witch is named Jadis. She was brought into Narnia by Digory Kirk and Polly Plumber from a different world called Charn, and she made Narnia so that it was always winter. The White Witch appears in the following Narnia books:The Magician's NephewThe Lion, the Witch and the WardrobePrince CaspianVoyage of the Dawn TreaderThe Silver Chair
Jadis of Charn, aka the White Witch.
Her name was Jadis the White Witch.
Aslan
In the Narnia movie series, the character of the White Witch, who is the antagonist and queen of Narnia, was played by Tilda Swinton in "The Lion, the Witch and the Wardrobe" (2005) and Jadis (the White Witch) in "The Chronicles of Narnia: The Magician's Nephew" (which hasn't been released yet).
Her name is Jadis, but is known to most as the White Witch.
The White Witch
Edmund lied because he was trying to gain favor with the White Witch by telling her about his siblings and their presence in Narnia. He was also feeling jealous of his older brother Peter and wanted to appear important in the eyes of the White Witch.
Father Christmas does not reappear in Narnia after "The Lion, the Witch, and the Wardrobe" because Aslan has restored balance to the land, eliminating the eternal winter imposed by the White Witch's curse. With peace restored, there is no need for Father Christmas to return to Narnia.
Narnia, as written in C.S. Lewis's novel "The Lion, The Witch, and The Wardrobe." In this magical land, it was always winter but never Christmas until Aslan's arrival brought an end to the White Witch's reign, bringing back warmth and joy to Narnia.
Two events in Narnia are the arrival of the Pevensie siblings in the magical land through the wardrobe in "The Lion, the Witch, and the Wardrobe," and the battle against the White Witch's forces to restore peace in Narnia.