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Set within the ULTIMATE Batman universe, Joker follows the life of Gotham's most terrifying criminal before and after his transformation. Told almost entirely from Joker's perspective, the series explores his fractured childhood, deteriorating mental state, and horrifying descent into madness after the events at Ace Chemicals. Blending psychological horror with crime drama, the series offers an unsettling look inside the mind of a man who slowly abandons every trace of humanity, culminating in his complete transformation into the Clown Prince of Crime.