Ancient Greek Vampires

=== Ancient Greek Vampires ===
Ancient Greek mythology contains several precursors to modern vampires, though none were considered undead; these included the Empusa, Lamia, and striges (the strix of Ancient Roman mythology). Over time the first two terms became general words to describe witches and demons respectively. 
Empusa was the daughter of the goddess Hecate and was described as a demonic, bronze-footed creature. She feasted on blood by transforming into a young woman and seduced men as they slept before drinking their blood. 
Lamia was the daughter of King Belus and a secret lover of Zeus. However Zeus' wife Hera discovered this infidelity and killed all Lamia's offspring; Lamia swore vengeance and preyed on young children in their beds at night, sucking their blood. Like Lamia, the striges feasted on children, but also preyed on young men. They were described as having the bodies of crows or birds in general, and were later incorporated into Roman mythology as strix, a kind of nocturnal bird that fed on human flesh and blood. 
The Romanian vampire breed named Strigoï has no direct relation to the Greek striges, but was derived from the Roman term strix, as is the name of the Albanian Shtriga and the Slavic Strzyga, though myths about these creatures are more similar to their Slavic equivalents. 
Greek vampiric entities are seen once again in Homer's epic Odyssey. In Homer's tale, the undead are too insubstantial to be heard by the living and cannot communicate with them without drinking blood first. In the epic, when Odysseus journeyed into Hades, he was made to sacrifice a black ram and a black ewe so that the shades there could drink its blood and communicate.