Call of Cthulhu NPCs are people first and statistics a distant second, so these lead with what an investigator would notice: how they talk, what they are hiding, and what they do when pressed. The numbers behind them are 7e — characteristics, a short skill list as percentages, and the Sanity that decides how long they last once they see something. Most are witnesses, sources or obstacles; a few are the reason the scenario is happening at all.