Vampire Dragons are members of the undead. They sustain themselves by drinking the blood of others. It is said that they are only “alive” at night, and seem dead or asleep during the day, as they cannot endure sunlight for long periods of time. Vampire Dragons can only reproduce by changing the eggs of other dragons, puncturing the shell with their fangs and injecting venom that kills the baby inside.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

He is a cold, cruel and calculated killer, the creator of his clan who got his reputation for siding with and then killing another very powerful vampire

Since then he's spent his time creating his own clan, obtaining as many loyal allies and possible members as he can.

Before all this he was quiet and kind, but for ever hating and wanting revenge for the vampire responsible for his terrible curse that made all the other dragons in the clan hate him.