What age range are we looking at for our characters? I was thinking of making someone a little younger than everyone else, probably an orphan, someone who makes a living scavenging for valuable stuff and spare parts to sell on to mechanics and so on. He would be one of the people who showed up after the previous gang had been dealt with.

A Scrap deck probably fits better for a character idea like this, but aside from the three variants of Scrap Dragon I don't see much growth for the archetype.