The City Guards are the local authorities. They strut about between one tile square and another, looking busy, decked out in more armour than your hero and generally acting superior. Every once in a while, the hero will encounter a Locked Door guarded by one or two grunts in armour. Generally, they will stand around until you give them the proper item, such as a pass, bribe them with food or occasionally real money, or just get to the right point in the plot. Bad guys attacking the city walls, threatening to break in and murder everyone in sight, are great occasions for checking out guarded rooms.