Vampires

This post has been a long time comming, the lore on vampires is quite extensive and will properly take me several posts to cover this particular species of monsters.

But first off; vampires don't sparkel, doesn't glitter, glimmer or shimmer. Some of them properly mousse their hair into ridiculas hairdues and are exceptionally emotional.
Seriously, that book series and the accompanying movies has given vampires more free meals than anything combined.
I could accept if it had been a clever scheme from the courts to "chum" the waters of easily duped teenagers with some crappy writing. But as fare as the rumor goes, the books were actually written entirely ignorent of the true state of things (well that much is evident, but it's be less sad if it had been intentionally misleading)

But just to clarify, vampires are predators. some of them are sadistic assholes, some don't really care which way or either and some of them might even been relatively pleasent and decent people. Just like regular humans beings.
And just like regular human beings they'll eat even their favorit sheep, if hungry enough.
We're livestock, some are shepards or some are predators. But we're livestock to them.

Origins:
Where do vampires come from? There's not much data on it to be honest, much is myth really, hearsay and legends.
Lilith, the first woman, said to have fleed eden and born children with demons. Her offspring was later slain by angles sent to bring her back. It is entirely resonable that Lilith found other ways to make childeren, which would be very much in tune with vampires tendency to refer to their "offspring" they've turned, as their children and have an almost parental regard for them.
Another possibility is Cain, the first son of Adam and Eve, that slew his brother Abel. Punished by God for his fraticide to wander the world forever and destroy the souls of men.
Also a good source for the MO of the vampire.
It must be assumed that Lilith and Cain crossed paths somewhere and began the scourge of nosferatu. They are both pegged as father and mother of the creatures in their legends.
But information is scarce, the younger generations of blood suckers honestly have no idea and noones crazy enough to go asking one of the ancients.

But the fact remains, for the last 6000 years there has been vampires lurking in the shadows, feeding on humans.