Queens

Queens, also called the originals, are the first chiropterans.

Origin
In any given generation, there are always two Queens, who are female twins born from one of the last Queens, and they are naturally antagonistic with one another. Saya and Diva are the current Queens of their species. They were discovered by Joel Goldschmidt in the 19th century inside a mysterious creature found in Iceland known as SAYA. In his experiment, he raised Saya like a daughter, but kept Diva locked away in a tower with virtually no human contact, or even a name.

Appearance
Unlike all other chiropterans, Queens appear to retain a human appearance at all times. They may also have some shape-shifting abilities, though during the series their abilities seem to be limited to modifying to their outward human appearance.

Hibernation
Queens spend only a few years awake at any given time, between decades of hibernation within a cocoon.

Feeding
The strength of a queen's traits are dependent on their feeding regularly on human blood. As such, Diva, who freely feeds on humans, can also freely use all of her abilities, while Saya, who avoids feeding, is usually only slightly above human level strength.

Abilities
Queens have enhanced speed, strength, and endurance that surpasses those of their chevaliers and other chiropterans. All other chiropterans are born of the blood of Queens, either through the queen's own efforts or human experimentation. Their blood can also crystallize and destroy any chiropteran of any level that was created by their sister queen.

Reproduction
When a Queen becomes pregnant with the next generation of Queens, her blood will lose its dangerous qualities. A queen can only be impregnated by a chevalier created by her sister queen, ensuring the purity of the species is maintained.

Procedure of Death
The twin Queens are the only dangers for each other as each of them can die by the others blood.

Generations

 * First Generation: Saya - The Mummy
 * Second Generation: Saya, Diva
 * Third Generation: Diva's daughters