Main Page | See live article | Alphabetical index The Hatter, popularly known as The Mad Hatter is a fictional character encountered at a tea party in Lewis Carroll's Alice's Adventures in Wonderland. He makes a cameo appearance in the sequel Through the Looking Glass as "Hatta", the imprisoned royal messenger. He has been portrayed on film by Edward Everett Horton and Ed Wynn and in a music video by Tom Petty. The phrase "mad as a hatter" existed long before the character, and may derive from the harmful effects of chemicals formerly used in hat making. It has also been said to be a corruption of the phrase "mad as an adder". See also: Hatter This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.