The Zmeu is from Moldavia. It is a vampire that can take the form of a flame and enter the room of a young woman or widow. Once it enters the room of the sleeping woman, the flame becomes a man and seduces them.
The Zmeu can have legs, arms, and appear completely normal. It’s main goal is to seduce and marry women. This vampiric creature has magical and destructive powers; he can fly and shapeshift. He also has supernatural strength.
Mark Beré Peterson: Hauntings, Urban Legends, History, Folklore, Mythology and Witchcraft 