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.

Raviel is the true leader of the Deadhearts, a group of Vampiric dragons that, for lack of a better term, "live" only to expand their clan's numbers. One of the first Vampire dragons, his reach goes long and far. As such, he has direct control of Lestat and his Envoy, using the former as a puppet. He knows what Lestat wants, he knows how Lestat can achieve his goals, but without him, Lestat is literally nothing.