My intention was for the NPC's to just be freely utilised as characters by everyone. It never really occurred to me to really add a specific personality to them; I just figured it would kinda happen. What I might do instead of making a sheet for them is write out a list of all our discovered NPC's in each area and write a synopsis on their role and personality.

The reason why there isn't that many NPC's listed is because we haven't discovered them yet. It'd ruin the surprise if I just listed every possible NPC we'd come across through the rp.

People are free to rp NPC's as they please. The only exception to this is when an NPC offers information, an item or a weapon/armor in exchange for certain valuables found as the roleplay progresses. I'll probably be the one rping that exchange, as they will usually involve a little bit of insight into the current world of the rp that will help us progress.