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Globally, Hatt (Hatt , 哈特 , Hatter ) is a rare predominantly boy's, but very seldom female first name. The first name Hatt is habitual in China, where it is a very rare masculine name, and the United States, where it is an extremely rare unisex name. Much more frequently, Hatt is the last name as well as the forename.
Hatt is also a name for the fictitious and mythical characters: Hatter Tarrant Hightopp , the character from Alice Through the Looking Glass, Alice in Wonderland and Nemesis Kid , the DC Comics character, Legion of Super Heroes.