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.
Niveus, as he calls himself, is the "son" of the vampire Contessa Nightbane. As the first member of the Nightbane coven, he is loyal to a fault and embraces his powers, however much his existence scares the mortal dragons. He has a quiet personality, speaking only when spoken to, but nonetheless is willing to follow the regulations imposed on him.