Urchin

You grew up on the streets alone, orphaned, and poor, you had no one to watch over you or to provide for you, so you learned to provide for yourself. You fought fiercely over food and kept a constant watch out for other desperate souls who might steal from you. You slept on rooftops and in alleyways, exposed to the elements, and endured sickness without the advantage of medicine or a place to recuperate. You've survived despite all odds, and did so through cunning, strength, speed, or some combination of each.
You begin your adventuring career with enough money to live modestly but securely for at least ten days. How did you come by that money? What allowed you to break free of your desperate circumstances and embark on a better life?

Features

City Secrets
You know the secret patterns and flow to cities and can find passages through the urban sprawl that others would miss. When you are not in combat, you (and companions you lead) can travel between any two locations in the city twice as fast as your speed would normally allow.   Light Fingered
Survival has necessitated you become proficent in pickpocketing, when in dense crowds you have advantage on rolls to do so.   Street Rat
Your time living in the gutters of society has granted you advantage on saving throws against contracting disease.