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.

Blood Excellion has, by nature, a very parasitic character. He tends to leech off the kindness of others and is excellent at manipulating others' emotions. Though he doesn't fight often, he tends to leave a trail of destruction and sadness in his wake due to his abusive nature. Oddly enough, he makes it his rule never to harm hatchlings. He treats Singing Velvet, the dragon who bit his egg, with a great amount of respect.