The Mad Hatter is a whimsical and eccentric character from the anime series 'Fushigi no Kuni no Alice' (Alice in Wonderland). Known for his peculiar behavior and love for tea parties, he often engages in nonsensical conversations with Alice and other characters like the March Hare. The Mad Hatter's role in the series is to add a layer of surreal humor and absurdity, challenging Alice's perception of reality and contributing to the whimsical atmosphere of Wonderland. His unpredictable nature makes him both amusing and intriguing to the audience.