Vampires

Typically classified as any monster that drinks blood for sustenance, Vampires come in many shapes and forms. For a healthy male adult, chances of surviving a vampire bite are approximately 10%... although only one in a thousand will overcome the infectious disease which turns 99.9% of survivors into vampires themselves within a week of being bitten. Those with this rare immunity are called Luckens, and often develop strange powers or mutations as a result.

Vampire Lecher
Hideous beings that have driven themselves insane with bloodlust. Caused by mutations that occur when the inflicted drinks his own blood, whether forced or out of maniacal desperation.