All Monsters in "Ratfolk"

Name	Level
Bone Mother	6
Ratfolk Ambusher	-1
Ratfolk Grenadier	4
Ratfolk Shank Squad	7
Swarm Voice	3
Tunnel Viper	1

Ratfolk

Source Monster Core pg. 289
True to their name, ratfolk are rodent-like humanoids well suited to living on the outskirts of mainstream society. Despite common misconceptions that they are dirty or diseased, ratfolk, or ysoki, as they call themselves, keep impeccably clean. Ratfolk are also sometimes mistaken for wererats and initially treated with fear until they can correct the mistaken identification—if they get the chance to do so.

In general, ratfolk have a keen understanding of pathological and alchemical sciences, which they employ in trade and self-defense. They make accomplished alchemists and inventors, and they often protect their lairs with traps, bombs, and other creations. Ratfolk merchants regularly dispatch large trade caravans that travel widely for a year or more before returning to their home community. During this time, they make an effort to learn new things from the people they encounter and collect interesting materials and goods that they can bring back to their warrens.

In their warrens, on the road, and in cities, ratfolk are extremely communal, thriving on proximity to and contact with one another even in relatively tight spaces. In addition, ratfolk are excellent at fighting in cramped spaces alongside their kin. Threatening one ratfolk or their allies is a surefire way to rally the whole community.

Vast Warrens and Hidden Homes

On Golarion, ysoki are most numerous in the Darklands below the continent of Tian Xia, where they rule a vast empire, but they can be found in the Inner Sea region as well—particularly in the badlands and hills of Numeria, where they eagerly scavenge and collect strange technological wonders and weapons.

Ysoki Snares

Although not so fond of them as kobolds, it's common for ratfolk to use snares and traps to defend their warrens. The placement and triggers for permanent traps are carefully considered to avoid wandering ysoki, especially children. Snares or even simple caltrops are often preferred as an alternative, deployed when the warren is threatened.