Both Lamia and Empusa, were in Greek mythology female demons that took on the forms of beautiful women in order to lure young men into their beds so they could feed on their flesh &/or blood. They “were the ancient equivalent of vampires and succubi–vampiric ghosts and demons.”
“Lamia had the tail of a serpent in place of legs, while the Empousa had flaming hair and two mismatched legs, one of brass, one of an ass.”
Lamia “was a woman who became a child-eating monster after her children were destroyed by Hera, who learned of her husband Zeus‘ trysts with her. Hera also afflicted Lamia with sleeplessness so she would anguish constantly, but Zeus gave her the ability to remove her own eyes.”
“Empusa or Empousa is a shape-shifting female being in Greek mythology, said to possess a single leg of copper, commanded by Hecate, whose precise nature is obscure.[1] In Late Antiquity, the empousai has been described as a category of phantoms or spectres, equated with the lamiai and mormolykeia, thought to seduce and feed on young men.”
Sources & Further Reading:
https://www.theoi.com/Phasma/Empousai.html
https://en.wikipedia.org/wiki/Lamia
https://en.wikipedia.org/wiki/Empusa
https://mythology.wikia.org/wiki/Empusa
https://mythology.wikia.org/wiki/Lamia
https://www.britannica.com/topic/Lamia-Greek-mythology
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