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.

He despises anything lively and pleasant. Coal Lump or "Coallie" will bite any dragon egg he can find so that he can make them as miserable as he is. He lavishly dismembers hatchlings that are lost in forests, just for pleasure. Sometimes he guides them away by pretending to be a lost stranger, then he lures them into a dark place, then as soon as the hatchlings aren't looking, he strikes and tears them apart. His children, however, he loves very much and he tells them to be good and strong just like he is. He is very loyal to the dragons he loves. He has many companions of both genders and is also leader of his small vampire clan. He secretly has an obsessive crush with Lily Goldflower, a charming black tea dragon. Though Lily doesn't know it, Coallie has been stalking her since hatchling school.