Vampires are the supernatural creatures of the Vampire Knight universe. As in traditional folklore, they are sensitive to the sun and exist during the night, however sunlight will only hurts there eyes and does not actually harm them dangerously. When vampires are killed, they turn into dust (however, Purebloods are special in the way that when they die, instead of dust, they shatter into shards of glass). The most effective way to kill a vampire is through the head or the heart using anti vampire weapons. Vampires have developed blood tablets that take the place of needing to feed on real blood, however it does not taste very good. They also have a bloodlust that can only be quenched by the blood of the one they love.
Vampires have existed for well over 10,000 years. The original vampires appeared when mankind's civilizations began to crumble. At one point there was a war with the humans, during which Purebloods began turning humans into vampires. When the number of vampires increased, the Kuran family became royals and a monarchy was established to rule the vampire race. However, two generations ago, the king and head of the Kuran family (Rido, Haruka and Juri's father) abolished the monarchy to avoid authoritarianism. The Senate was then established to govern the vampire realm with high-ranking aristocrats on the Senate. The Kurans continues to be the highest standing family and it is known that there are families who would support Kaname Kuran if he chose to take back the kingship.
There are 5 levels of vampires. These are based on the purity of vampire blood, depending on how diluted their heritage is by human blood. Level A only includes Purebloods, the rarest, most elite, and most powerful class, whose blood lines have never mixed with humans. Purebloods are also the only class that can turn a human into a vampire. Level B are known as "Nobles" or "Aristocrats". These are also very powerful vampires, but not as mighty as Purebloods. They have a small amount of human blood in their ancestry. Levels C, D and E include humans who have been turned by a Pureblood rather than being born as vampires. These ex-humans would eventually go mad with bloodlust and become a "Level E" if they are not stabilized by drinking the blood of the one who originally bit them. Stabilized ex-humans are known as "Level C" or "regular vampires", and humans that have been bitten but have not gone mad are "Level D".
- Main article: Purebloods
Level A Vampires. The heritage of these vampires hasn't been diluted by human blood. They're the strongest type of vampire and have the most significant powers, many can erase memory and destroy a lower vampire with ease. Despite the fact that Purebloods are very powerful, they only make up for a very small portion of the vampire population. The Council hold Purebloods in extremely high regard. It is taboo to kill or to even harm a Pureblood. As a result, Purebloods are treated like royalty. The powers of Purebloods are dangerous to both their fellow vampires and humans. Purebloods have the ability to compel lesser vampires to do their bidding. In recent chapters, Kaname Kuran demonstrated why Purebloods are feared and respected by single-handedly killing the members of the Vampire Council. If a human is bitten by a Pureblood that human will turn into a vampire. The Pureblood and ex-human, in question, become bonded in Master and Servant. The master is able to completely control their servant. While the servant becomes incapable of ever killing their master, even if they wish to. When Purebloods die, their bodies slowly disperse into small sparkles (as shown by Shizuka Hio's death in the anime) and then shatter like glass. Subsequently, the death for a Pureblood is different to the death of any other type of vampire.
Level B vampires. They are elite vampires with specialized abilities beyond normal vampires.These are also very powerful vampires, but not as much so as Purebloods. They also have a small amount of human blood in their ancestry. They also have super strength and speed. When an aristocrat is killed, they turn to dust, as do the other levels below them. These aristocratic vampires are still able to be compelled by Purebloods, but enjoy a much more independent lifestyle in general. The Council of Elders is usually made up from their ranks.
Level C vampires. These are average vampires with no significant powers. Level C vampires are not usually seen in the anime but have several different appearances throughout the manga. They only have super speed and they heal faster than a normal human.
- Main article: Ex-human vampire
Ex-human vampires, also known as level D and level E are the lowest form of vampires, humans who have been turned into vampires by being bitten by a Pureblood vampire. The E in Level E represents the word 'end' because after falling to level E, it's usually the end of their life after losing control. If they don't want to die, they'll have to drink the blood of the Pureblood that bit them. The consequence is that the Pureblood would have complete control over the person and that person would truly become a vampire.
Elite vampires, such as Level B and Purebloods are known to have special powers. The following powers have been demonstrated:
- All vampires display an accelerated healing. The purer the vampire blood, the stronger the healing factor.
- Decelerated aging: the purer the vampire blood, the longer the life of the vampire. Purebloods are immortal. They age very slowly and they can only be killed if someone cuts off their head or if they are continously imbolised and shot/stabbed in the heart with an anti-vampire weapon.
- Ability to erase memories.
- Ability to use animals as a familiar, to watch and listen.
- Telekinetic powers, ability to use these highly destructively.
- Arisocrats most commonly display the ability to control an individual element, such as fire, ice, lightning, etc.
- All vampires hace hightned senses like their ability to smell blood from a great distance.
- Super strength, vampires can tear through flesh with ease and destroy large concrete structures (walls,pillars,etc) and can leap great distances
- All vampires have accelerated speed, they are able to appear beside someone instantly.