Factions

Each faction (a gang, the police, the homeless, shopkeepers, and so on) has its own look, gear, vehicles, and personality: how aggressive, fearful, or disciplined its members are. That personality is what drives their choices once an encounter hands off to the reactive AI: a hot-headed gang pulls a weapon fast, a fearful one backs down or flees.

You can add your own faction or tweak an existing one the same way as everything else in InteractV: drop your own file in the matching folder under scripts/InteractV/, using the built-in ones as a reference. See Customizing for how the file layering works.