If you're looking for an enemy group for your players to encounter while out adventuring, a cult is a good place to start. In the upcoming Pathfinderd Battles: Ruins of Lastwall set, there's several cultist miniatures that you can pull out for your encounters. We get a look at them here.
From the website:
This week's preview of Pathfinder Battles: Ruins of Lastwall examines the faith of one of Golarion's newest deities. Fewer than 50 years ago, the masked man known as Razmir appeared in the River Kingdom of Melcat, and declared himself a god after having passed the Test of the Starstone. Since that fateful day, he has raised a nation in Melcat's place that bears his name—Razmiran—and stretches all the way to the shores of Lake Encarthan. All who live there are required to worship him and pay harsh tithes to his church. Because PCs are likely lining up to join his growing cult, we thought we'd give them some minis to use!