The Hatter is a fictional character initially encountere at a tea party in Lewis Carroll's Alice's Adventures in Wonderland and later again as "Hatta" in the story's sequel, Through the Looking Glass. He is popularly referred to as the "Mad Hatter," but is never called by this name in Carroll's book- although the Cheshire Cat does warn Alice that he is mad, and the Hatter's eccentric behavior verifies this. (Likewise, the chapter in which he first appears, "A Mad Tea-Party", is often erroneously called "The Mad Hatter's Tea Party" but in fact it takes place in the garden of the March Hare.) He has been portrayed on film by Edward Everett Horton, Sir Robert Helpmann, Martin Short, Peter Cook, Anthony Newley, and Ed Wynn, and in a music video by Tom Petty.