Mostly thought of as vermin the seem to show up wherever a large enough hole in the ground can be found for them to colonize. They mostly serve a master that’s stronger and more evil than them, normally there pretty craven creatures that attack in hordes but can be frightened off easily if the battle goes against them.
Like most of the moon creatures they are cannibals and have a very high birth rate. They attack with crude weapons and armor and have no magic of their own.
The basic undead guardian, constantly on patrol looking for intruders or used to guard important areas. Beings that know no fear and attack till there bones are shattered. Most have a common weapon and shield and never flee a combat.