[quote=@BigPapaBelial]
So I'm assuming aside from the mutants, all those factions are fair game for character to be a part of? I'm curious as my main character idea kinda hinges on it.
[/quote]

Mutants are open as a backstory as long as your mutation isn't too major. Like a extra ear or eye or something weird like that is ok. If you're coming from a mutant background you need sentience and intelligence still, the more mutations you have the less you'll have of those (i.e. greenies).

Or could also be some kind of mutant sympathizer but you obviously have your own idea on what you'd like to be but these are the pathways thus far.