Y/n was one of the three hyenas that Harley Quinn "raised with the Joker". In reality Harley did all the work while Joker sat on his ass like a lazy jerk. Y/n's brothers, Bud & Lou, while being exetremely smart for animals. were no where near as intelligent as Y/n. A crazy scientist noticed this after observing one of Y/n's many battles with Batman and decided to take her for experiments. Eventually Y/n's older brothers passed away from old age while Y/n seemed to not be aging at all thanks to one of the scietists many experiments. Eventually the scientist had a successful experiment, a experiment that turned Y/n from hyena to mostly human. Of coarse he ddn't stop after that, he started mutating her genes, creating the perfect super weapon... or so he thought. A few hours after another experiment Y/n seemed to snap and go into an animalistic stage of carnage. She ended up killing the scientist and a majority of the people around his location. After Y/n came to she started learning how to use her powers, she could even go from hybrid to 9 foot tall hyena in a matter of seconds. Y/n spent three months learning her powers before starting a slow life of crime, but within a month Y/n had moved up to the top of the most wanted list, right next to Harley Quinn. It wasn't long after news of Harley's capture getting out that Y/n herself got into abut of trouble, but she wasn't scared... no, not at all.