The Oz villain is the WITCH, a five-letter word. The WITCH is a character from L. Frank Baum's classic novel The Wonderful Wizard of Oz. She is the main antagonist of the story and is determined to get her hands on the magical ruby slippers. She is a powerful sorceress who uses her magic to try to stop Dorothy and her friends from reaching the Emerald City. She is eventually defeated by Dorothy and her companions.