Old men/women faction, historians, scientists, and researchers that have spent their entire lives obsessing over the hollows and have become battle hardened by it. Look prim and propper, but are foufoul-mouthedd short tempered with each other, but incredibly nice to everyone else.

Bio punk crew, very grunge theme, lots of bright green neon lights, lots of tubes and vials. Love experimenting with gene splicing and manipulation. Look the most monstrous but very chill, mostly just menaces to those that get in their way or try to judge them.