Deadpool (1997) #3
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The daughter of former X-Men member Sean Cassidy, a.k.a. Banshee, and Maeve Rourke, Theresa Rourke was raised by her first cousin once removed, mutant terrorist Thomas Cassidy, a.k.a. Black Tom.
Born with super-human senses and the power to heal from almost any wound, Wolverine was captured by a secret Canadian organization and given an unbreakable skeleton and claws. Treated like an animal, it took years for him to control himself. Now, he's a premiere member of both the X-Men and the Avengers.