The ghul was a cannibalistic, shapeshifting jinn, in Arab myth, possibly developing from the much earlier gallu demons of Mesopotamia. They could take the form of a person, (usually someone they had eaten), a donkey, a hyena, a swirl of sand, and more. This is an interpretation of a poor Changeling crafted into one by a dark Djinn-like Keeper.

sheet here https://www.patreon.com/posts/70976578