This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Leyak (Balinese)
In the folklore of Bali, the Leyak is a mythological figure in the form of a flying head with entrails (heart, lung, liver, etc.) still attached. Leyak are said to fly trying to find a pregnant woman in order to suck her baby's blood or a newborn child. There are three legendary Leyak, two females and one male.
Leyak are humans who are practicing black magic and have cannibalistic behavior. Their mistress is the "queen of Leyak", a widow-witch named Rangda, who plays a prominent role in public rituals. Her mask is kept in the village death temple and during her temple festivals, she is paraded.