A monster is typically classified as a vampire based on a set of characteristics and traits commonly found in folklore, literature, and popular culture. Here are the key elements that define a vampire:
1. Undead Nature: Vampires are often portrayed as beings that were once human but have died and been resurrected or transformed into an undead state.
2. Blood Consumption: The primary trait of vampires is their need to consume blood, usually human blood, to sustain their undead existence. This act often involves biting the neck of their victim with sharp fangs.
3. Immortality: Vampires are usually depicted as immortal or having an extended lifespan, not aging as humans do.
4. Enhanced Abilities: Vampires often possess superhuman strength, speed, agility, and heightened senses. Some may also have the ability to transform into animals (commonly bats or wolves), mist, or even other humans.
5. Aversion to Sunlight: A common trait is their weakness to sunlight, which can harm or destroy them. This is why they are typically nocturnal.
6. Weaknesses and Vulnerabilities: Vampires often have specific weaknesses, such as a sensitivity to garlic, holy water, crucifixes, and silver. They can also be harmed or killed by a stake through the heart.
7. Fangs: Sharp fangs used to puncture the skin and draw blood are a characteristic feature of vampires.
8. Hypnotic Powers: Many vampires are depicted with the ability to mesmerize or hypnotize their victims, making it easier to feed on them.
9. Reproduction: Vampires can often create new vampires by biting and draining a human's blood, then having them drink the vampire's blood, or through other means depending on the lore.
10. Lack of Reflection and Shadow: In some stories, vampires do not cast a reflection in mirrors or shadows.
These characteristics can vary widely depending on the specific cultural, historical, or fictional context. Different traditions and stories may emphasize some traits over others, or introduce unique elements specific to that version of the vampire mythos.