I assume this is the 5ish fuling that show up every night? I get that like clockwork on my main world.

The odd thing is that, with my main character, in a new playthrough, where I'm currently searching for Moder, I get greywraf and skeletons that do battle every night. There's always a brute and shaman, and, if I go out after waking up, and the brute has won (it usually does), it just walks off into the sunrise and disappears.