Dorothy Gale is the fictional protagonist of many of the Oz novels by the American author L. Frank Baum. Her best friend is Oz's ruler Princess Ozma. Dorothy first appears in Baum's classic children's novel The Wonderful Wizard of Oz and reappears in most of its sequels. In addition, she is the main character in various adaptations, notably the classic 1939 movie adaptation of the book, The Wizard of Oz.