Mary Tanner's mother often used illegal, highly experimental drugs to get high, and Mary was born with metahuman powers that gave her leather-like skin and claws. At the age of sixteen, she had become the leader of a human trafficking group, smuggling illegal immigrants back and forth between Mexico and the United States. Leather was captured and incarcerated in Slabside Penitentiary. However, she was freed by the Joker and has returned to smuggling in Mexico.




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