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.

Jack was bitten by a Vampire who was very friendly and loved by many, but he is the opposite of her. While his "Mother" was out hunting, his egg was stolen by a hawk, and it was dropped in the desert. This impact damaged his brain, which made him vicious and dumb. He learned to survive by killing any living thing he could find, even if it was just a mouse or two. He craved blood more than anything else, and learned to go after mammals and dragons to get the most blood. He waited in hiding for his prey to approach, then immediately jumped out and ripped his prey to pieces. He one day bit an egg, and was immediately attacked by a furious female Vampire. She was the leader of a large coven, and she took him into it, saying his savage nature would prove useful. The egg he bit was looked after by a lower ranking Vampire and was named Halo. While Jack is the founder of his clan, Halo is the leader as she is much more intelligent than Jack.