Banshee (Warcraft III)

Banshees were once beautiful female Night Elves who were brutally murdered by demons during the fall of Kalimdor. Their restless spirits were left to wander the world for many ages in silent, tortured lamentation. Over the years they became jealous of the living and seeded a deep hatred for all life. Yet when the Lich King, Ner'zhul, became aware of them, he gathered them together and promised them vengeance upon the living. Ner'zhul gave them terrible voices so that the living would finally hear their timeless anguish. Thus, the Banshees have pledged themselves to the Undead cause and serve as valuable warriors in the Scourge. The spectral Banshees can fly and are fond of hammering their enemies with tortured blasts of sonic force. Their unnerving, unholy screams can be heard from miles away.