While the complete change in his appearance surprised him, he does not question why it happened. It was clearly the demon arms he affixed to himself. However, the overflowing euphoria he now felt filled him with the urge to run amok and he had no intention of holding back.
Acquired from the card pack Alice in Mirrorland
Degenerate Mad Hatter is one of the few cards in the game whose name changes drastically when evolved.