This article is about the 2010 live-action character. For 1951 animated character, see The Mad Hatter. Tarrant Hightopp, also known as The Mad Hatter or simply The Hatter, is the deuteragonist of the 2010 Disney film Alice in Wonderland and the main protagonist in its sequel Alice Through the Looking Glass. He is a hat maker that has been poisoned by mercury, hence his orange hair. He is part of the resistance to bring down the Red Queen's command of Underland and thus end her bloody rule. He is