This is open to XIII-2 as well if you can identify with that game better, but I'm thinking mainly XIII here. Most of the time in XIII, we get a lot of focus on our l'Cie party members, but there were a lot of outside groups of people and civilians that were caught up in the story.
So, take the perspective that you are a citizen in the world of Cocoon during the events of XIII. Where do you think you would fit into the society? What would be your reactions to the news and talk of the l'Cie threat that appear in the form of Lightning, Snow, and the others? Where would you live?
Just for some examples to think about, would you work with NORA, PSICOM, or the Sanctum? Would you live in Eden, Bodhum, Palompolom? These are just examples to help remind you of some of the factions and locations at play in the game!