Asiman

The Asiman is from the Dahomey people. They are creatures who are shapeshifting witches created by someone casting some specific spell and losing their humanity. They can remove their skin and turn into a glowing light. They fly through the air to find prey and after feeding, they turn into an animal to leave. They can only be killed when in animal form.

Citations:

Bane, Theresa. Encyclopedia of Vampire Mythology. United States, McFarland, Incorporated, Publishers, 2017.

Maberry, Jonathan. Vampire Universe: The Dark World of Supernatural Beings That Haunt Us, Hunt Us, and Hunger for Us. United States, Kensington Publishing Corporation, 2006.