Jadis has the appearance of a very tall human woman but is actually the last scion of the royal house of Charn as shown in "The Magician's Nephew". In later Narnian times her origin on Charn is not known to her subjects. Jadis claims human descent to legitimize her rule, but in Chapter 8 of "The Lion, the Witch, and the Wardrobe" Mr. Beaver describes her as descended from Lilith, a Jinn and Adam's first wife, and from giants, thus having no human blood at all.