Dullahan



The Dullahan is a mythical being in Irish folklore. It is normally depicted as a headless rider on a black horse who may sometimes carry their own heads. Most often depict it being male but has been versions where it is female. Its also said if the dullahan were to ever stop riding its horse, death would occur or happen soon. Its weakness is also gold which can deter it away.

It appeared in the last episode of season 4 titled Headless Horseman where it terrorized a group of students and a teacher on a field trip in Ireland who had decided to stay in the woods for the night.