Things don't generally end well for most of them, but the guy who wants to testify in the D'Angelo case in season one, the security guard who wants it to be one way (but it's the other way), Randy's stepmother, Bodie's grandmother, the deacon, the old woman who doesn't want to move during the Hamsterdam experiment, Cutty's ex and some of the other less-jaded teachers seem to have stood in for people doing what they can given where they are.
One character is supposed to get something close to a minor happy ending, and I've actually been assuming that Bubs will be the one. Partly because of the Season 4 finale, and partly because I can't think of anybody else even remotely in a spot to not get screwed/screw themselves over the way things stand right now.