Uber

The Uber is from Turkish legend. They are related to witches and vampires. They are formed when someone rises from the dead that died a violent death or when a foreigner died in Turkey but was not Muslim. These creatures are related to Vlad of Wallachia (Vlad the Impaler, the inspiration for Dracula) and used as a bogeyman figure. The Uber legend is closely tied to the intimidating nature of Vlad the Impaler.

Citations:

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.