Ker was a demoness of cruel death. They craved blood and ripped out the souls of the dying, sending them on their way to the Underworld. They were known to frequent the battlefields of old where they would have to rumble with the gods for the best pickings (the gods protected those they favored). Most of the time, Keres were depicted as fanged women with talons and wings.
I know a couple of human women that might be mistaken for Keres if you catch them on the wrong day ;-)
Happy K to Z!
Shameless Plug Time
She has a destiny so great that even the gods fear her...
Oracle of Delphi
"I would think after wha' you jus' went through, you'd think anythin' was possible."