Boston - Johnny is from Boston. Not just Boston, he is from Dorchester, one of the most violent and crime-ridden areas of the city. It is hard to sleep through a night without being awoken by gunshots or police sirens. It is a constant war between Irish and African American gangs, and it is a bad, bad place to live.
Caregiver - His Nature is Caregiver. He may not have much to give, but he likes to help when he can. Whether he is snagging food to feed to other urchins, or convincing some bullies to leave somebody alone, he does what he can to help.
Urban Shaman - He is a Theurge. He handles this by being quite the urban shaman. He deals with the spirits of glass, steel, rat and dog. He deals with the unique spiritual ecosystem of the city. A lot of things he does may seem odd to Theurges more used to the rural world, but here they make perfect sense.
Glass Walkers - For some reason he has a severe dislike of Walkers. He can smile and nod when the need arises, but for some reason he can't stand them.
Educated - He may not look like it, but Johnny is very educated. He has roughly the equivalent of a Masters degree, focusing primarily on Literature. He is self-educated, with a voracious appetite for learning.
Rites - One of the main focuses of his Theurge duties are Rites. He is always looking to learn new ones, or aid friendly folk with the ones he knows.