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Mad Hatter, the iconic and eccentric character from Lewis Carroll's "Alice's Adventures in Wonderland," was brought to life through the captivating illustrations of John Tenniel. Tenniel's whimsical depiction, featuring the character's tall hat, mismatched clothing, and mischievous demeanor, made the Mad Hatter an unforgettable figure in the world of literature and pop culture, forever associated with Tenniel's artistic genius.