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.

Zwenik's egg was bitten by Eskora (and influenced by a very reluctant pink) so that Eskora could have an understudy for those nights when she grew tired of playing enigmatic oracle. Zwenik, though, had her own ideas. A playful dragon (at least by vampire standards), she had no interest in spending her nights cooped up in a desperately dull shrine, so she left to find her own fun. Zwenik eventually teamed up with Rovek, a vampire dragon who looked enough like Zwenik for even careful observers to confuse the two, and they now spend their nights confusing the unwary by appearing to be in multiple places at once.