When you were a 5 years old, you were kidnapped and tested on. It turned you into a cat mutant. You still looked human but you had cat ears, a tail, retractable claws, two sharp fangs, and cat instincts. But when the facility that was testing on you burned down, you escaped and fled into the city. You had live out there on your own for about 5 months, living off scraps and whatever you could find. One night you met a mutant turtle named Leonardo. He was kind to you and helped you as he brought you home to the lair with him. Ever since then he basically took care of you and raised you. With the help of his brothers and sensei of course. But now you are 15 years old and very stubborn. You seek put a lot, go to parties on the surface making up excuses why you had cat ears and a tail so they wouldn't be suspicious.