Horse Dragons have equine-shaped bodies and hooves instead of claws, which allow them to be fast runners. They specialize in running takeoffs, which are quicker than taking off from a stand-still. Horse dragons are able to stalk their prey from the ground then quickly execute an aerial attack for the kill.

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.

Dunmer Bervirius is part of the Hellpack, a group of Hellfire Wyverns and Horses that live slightly separated from the rest of the flock. Having started with a few mated pairs made of one of each breed, they take in new wild-born Hellfires and Horses every generation, as mates for their Hellhorse offspring.

It's a good thing that Dunmer doesn't particularly care what time of day it is, given that his mate is so stubbornly nocturnal. He can sleep any time he needs to, anywhere he feels like it, no matter how busy, noisy, or just plain chaotic his surroundings are.

A few members of the Hellpack claim that Dunmer can, and has, fought off bandits in his sleep. He doesn't remember this event, but thinks it could explain the time he woke up with blood on his hooves.