Aka :Demons, Devil, Faeries, Incubes, ...

Origin : first accounts dated back from Antiquity

Description : These non human spirits are shape-shifters. In cases dealing with Ouija boards, black magic and satanic worship, they have been reported to disguise themselves as friendly and helpful human spirits. They can also appear as humans, animals or monsters (demons have usually two shapes : a monstrous and  a human one)

Time : any time

Records : 1000?

Location : tend to appear only when summoned or in the vicinity of a cursed place

Theory : They are non-human originated ghosts and have the capacity to harm and alter our physical world.

Veracity factor : 5/10  - very few proofs of their existence