Fuka

Fuka is a harmful Irish variety of puck, bogie, or werewolf. The word "Phouka", sometimes used as a synonym for the word "pak", in medieval English meant the devil.

He can take on different guises, most often a horse, but also an eagle or a bat, but he can look like a skinny old man dressed in rags.

Usually helps people, but can joke and play pranks.