A semi-military police force in larger communities, these folks will be the public face of law and order.
They will be guarding gates, patrolling streets, providing visible security for dignitaries, accosting strangers, arresting law breakers, and generally trying to keep a lid on any simmering resentment in the public sphere.
Most will be normal, decent (if slightly cynical) folks who want to do their jobs and go home. There may be a few who are Paladin wannabes who truly care about law and order, but at the same time there will always be some who enjoy inflicting rules (and even pain) on others for the sheer sense of power.
Remember, they have the law on their side.
And in a fair number of cases, they will BE the law.
Approach with caution….
Dungeons and Dragons Colour 