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.

Mohrior Xenos II, named after his golden father, is a fiercely loyal dragon to the Aincrad Clan and his master. He is regarded as the swiftest of all dragons in the clan and is usually seen dashing about the clan's territory, making sure that the area is safe and free from any sort of trespassers. Mohrior is also used by the scroll owner as her means of transportation due to his great speed and resistance.