Vampires:
So vampires we'll use a little mixture of lore. Can use shadows to travel quickly and flee an area, Drinks human bloods, They have average strength, and have nearly unlimited endurance. (Sustained combat and ambushes are their specialties) They usually live in places isolated from human populations, a few hold large land titles where they build up their estate. The more civilized ones (Still evil, but have found a way to blend into society) use thralls. New vampires who aren't employed by a Master or Mistress often hunt at night and are rabid. Vampires sleep during the day, and the wild vampires will sleep in graveyards, unless on church or holy grounds. There are more wild vampires than civilized ones. Vampires are also territorial ranging from a acres to thousands of acres of land. The stronger the vampire the larger their territory. To kill a vampire, A wooden steak has to be driven through its heart, their head removed, and the body burnt for good measure. Holy water can stun them and crucifixes can keep them at bay. The curse is spread through a bite, unless the body is drained of blood then death occurs naturally. Vampires can not resist the blood of the innocent and often make children their targets for feeding.
Werewolves:
Werewolves Are humans a majority of the time, during the full moon they transform into their true forms. A Majority of the time they live in packs, the pack will often live close to each other while in human form. Their ranks go from Alpha, Beta, the rest of the pack and the runt as the Omega. Werewolves can reproduce with out spreading the curse through biting. Werewolf can have infighting if they have a weak Alpha. The pack also possesses territory, and transgressions are sometimes dealt with in human form. It is not unheard of, but also very uncommon to find high ranking city officials to be cursed. To kill a werewolf one has to put a silver bullet through its heart or severe bodily damage such as explosions, and very high falls. Wounding a werewolf with silver will cause the wound to heal very slowly. Dispose of the body by burning the corpse.
The Undead:
The undead are those brought back to life with some form of free will, they often eat the living to sustain their life force. Their bodies do not rot but they are quickly outed as they look sickly direct sunlight makes them weak and nearly useless. They often attempt to maintain their former standing in society to try to blend in. To kill a member of the undead one must destroy their brain or remove their head. Afterwards burning of the corpse is mandatory. They can not spread the curse, and can only be created by necromancers.
Zombies:
Zombies are mindless flesh eating monsters, they are often slow but can spread their curse through bodily flood exchange, such as biting, or contaminated blood entering the body through other means. Although easy to deal with one on one, a horde can overwhelm a single combatant. To kill one must destroy the brain or remove the head. Burning the corpse is mandatory. It is still not known if its a magic born curse or something else as no links to necromancy or voodoo can be made yet.
Ghouls:
Ghouls are abominations patched together from living and dead they consume corpses and kill all living things, for what purpose it is unclear. A majority of the time a human is used as a living host, while dead animals or other creatures are combined. Again its not quite sure how they are created or by who. But they do posses the ability to breed and do not seem to have a higher cognitive function like humans or other creatures. They live in colonies with a single female queen, the regular ghouls bring corpses to the queen. The queen is often large and over sized. The Queen can birth up to a dozen ghouls per month, with her offspring being mature after two months.
Witches:
Witches often hide in plane sight, are usually apart of large covens and considered to be one of the most dangerous creatures of darkness. They possess unnatural long lives, perform dark rituals and serve an unknown entity. They can bewitch men, and women if they so choose, often making them slaves or sacrifices. No one truly knows how a witches coven is organized as they are dealt with immediately. A witch can not cross running water, but can have their slaves build bridges with grave dirt, or spelled wood which allows them to cross. Witches must be bound with silver chains, and buried deep and upside down within holy ground. An Iron plate is dropped in first, then iron rods are driven around the plate, and lastly a large stone is used to seal the witches under the ground.
Druids:
Are solitary and often pose nearly no threat to humans, unless one was to accidentally stumble into their territory. They're one of the few native beasts that live in the Americas. They can shape shift into certain animals and often commune with nature, rural villages tend to have problems with them as the druids will often tear down foundations and frame work laid by humans as to stop their destruction of the forests and their planes. Druids can be struck mortal blows by ordinary means while in human form. Although as an animal the natural strengths of the animal is doubled, so one must use caution when fighting these. It is best suggested to avoid violent confrontations and communications is the best way to deal with these. Although they are renown for the stubbornness is can be done.
To come: Ogres, Trolls, Golems, A variety of Demons, Warlocks, Windigos, Chupacabras, Sasquatches, and any other I think of.