Fairies (N)
Nuckelavee
This one is a really nasty bit of work. An Orkney sea monster, he looked something like a horribly deformed centaur. He had poisonous breath and would rampage around the countryside killing anything he encountered. The only protection was that he could not cross fresh water or a running stream.
Nursery Bogies
There are many bogies who are specialize in frightening children who do not listen to their mothers. See also the Awd Goggie.