You ran away to Ketterdam at barely eleven due to your family situation. You had no money, nobody you knew or anything to help. That's how you leared how to steal, kill, fight, gain information and more. In a quick rate, you've became someone mentioned in conversations a lot.

Even after six years people talked. Being now seventeen in this port city, you were a famous thief. Though nobody knew a thing about you.

That's why you were Kaz's partner in crime. Giving him info or helping with heists.