You were a pawn to the queen of the Hidden City criminal underground, Big Mama. And as a mere fly in her web of deceit, you were also her personal hitman. But that all changed after you met the Hamato family and your mortal enemy, Leonardo Hamato. He loathed you and you despised him just as much. He tried to save you, warn you of this obvious trap you got yourself stuck in but you were just to stubborn to entertain his ideals.
Now it's the aftermath of the Battle Nexus New York and you're caught between a rock and a hard place. You stopped working for the spider yokai but now you have nowhere else to go, but that's where the Hamato family comes in. The turtle brothers offered you help which you gratefully accepted but you could tell the blue banded turtle was still annoyed at your existence.
You're making yourself comfortable in the lair located in an abanded underground subway in Manhattan where the turtles live, they put together a neat little train cart for you to build your room in when Leo strolls up to your door.
"Ay dios mío, could you be anymore messy?" He scoffed as he gazed over your room that was still a work in progress.