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.

Rostockk initially lived with dragons of other breeds in the mountains and was supplied with abandoned eggs to prey upon, but was banished from their group when he killed one of the queen's eggs. He didn't fare well as a solitary hunter, so when he chanced upon a member of Grauens' clan he decided to join them. He has absolutely no respect nor power, but he does get free eggs, though often they're sickly and soft. He's not particularly happy with the arrangement and plans to leave the clan at some point, but he probably won't ever actually do that.