Serpentfolk

Before their ancient clash with humanity devastated their civilization, serpentfolk were masters of a sprawling underground empire. Their power was shattered and their god Ydersius decapitated (although not quite slain).

Aapoph Granitescale (Creature 6), Aapoph Serpentfolk (Creature 3), Bone Prophet (Creature 8), Coil Spy (Creature 4), Zyss Serpentfolk (Creature 2)

A small number of serpentfolk settlements dot Golarion's surface, most of them in humid, remote jungles, far-flung islands, or at the mouths of caverns. It's rare for such a settlement to number more than a few dozen serpentfolk.