Stolas, also known as the Owl Demon, is a demon originating from The Discoverie of Witchcraft, The Book of Spirits, Pseudomonarchia Daemonum, The Lesser Key of Solomon, and Dictionnaire Infernal. He is mainly described to be a human-owl or raven, with very long legs.
Stolas appears to be a prince of Hell, which has the duty of commanding twenty-six legions in Hell. He appears to be an astronomy teacher. Stolas also has high knowledge in very poisonous plants and very precious stones. The knowledge of stones, plants and stars for the demons is very important for their ritual and magical seasonings.
Stolas has two forms, the first form being the black raven (being his demonic form), while his second form is a white-winged human with dark hair and very bright blue-green eyes (which is his angel form).
- Stolas appears as a character in the adult web-cartoon, Helluva Boss, a spin-off of Hazbin Hotel, where he retains his status as an elite member of Hell.
- In the article of SCP-3094, Foundation-agent Christian Brandt encounters the demon Stolas in another realm.