Vampire Hunter Association

The Vampire Hunter Association is made up only of Vampire Hunters. It keeps control over its members, assigning them jobs and creating the list for which dangerous vampires are added in order for hunters to destroy them. It is lead by a President who has great authority over the Hunters and has the right to order any person to be executed for disobeying his or her orders. The Hunters carry special weapons that don't harm humans but are fatal to vampires, often stifling their abilities to regenerate quickly. It is taboo for a vampire to use Hunter weapons against other vampires in a duel.

Kaien Cross was tipped to become the President of the Association, but let the position 'slip through his fingers'. The current president is officially Kaien Cross, but in reality is Toga Yagari. The former president having dodgy dealings with the Vampire Council was dispatched by Kaien

According to the words of Kaname Kuran, twins from a Hunter family are extremely rare, even to a vampire that has lived for more centuries. This is due to the fact that when Hunter fetuses are in the womb, they rely on instinct as they would in battle. This means that fetuses fight for supremecy and eat the weaker of the two. The fact that Zero and Ichiru was able to be born together is highly unlikely. There is evidence is suggest that the reason why Zero is more adapt at vampire hunting and more healthy as a whole than Ichiru is because they were meant to be one, and Zero is simply the greater half. By one twin consuming the other, they become one as they should have been in the first place.