The Drowogr

Drowogr are the dead who can be seen as elves, but not exclusively high status people. They're more commonly associated with things like making animals mad and pestering livestock or something called riding the roof. The way to kill Drowogr is not like a similar to zombies, you have to cut their head off. In Greta Saga after cutting off the head Amlath shoves nose into its own arse.