Vampires
My vampires, or “Fangs”, are a creation of my own.
What they are:
Basically humans with upgrades. They are faster, stronger and have enhanced sensory perception. Technically, they’re immortal, as they don’t age and rarely suffer from diseases.
The downside is that they’re sensitive to bright light and loud noise, and while exposition to these does no real harm it is painful. Direct sunlight, however, rapidly causes bad burns that can lead to death. Fangs can be wounded and killed by any ordinary weapons, despite their bodies healing quickly. If their injuries are too severe and not treated, they can die from them.
Also, they require a lot of energy which is gained from drinking blood, additionally to eating and drinking regularly.
What they are not:
Mythological creatures of any kind. They neither change their shape nor fly, religious symbols don’t harm them, neither does garlic. They’ll happily cross rivers and enter any house, invited or not.