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.

Princess Twi (her full name being Twilight Sparkle) is a rather strange but sad dragon. She appears to be mad, as she claims she is an Alicorn Princess from a mysterious land called Equestria. No one has any idea what an Alicorn is, nor have they heard of any place called Equestria, so her words are commonly dismissed as rubbish. She travels the land, asking dragons if they have seen a creature called a "Spike", which is described as a purple and green wingless dragon with the ability to send and receive scrolls through his flame breath. Unfortunately, nobody knows the whereabouts of "Spike", so her travels are in vain. She says that once she finds "Spike", the two of them will come back to Equestria where her friends eagerly await her return. But no one has yet seen the "Spike", so the answer remains a constant "No". But no matter how many times she is let down, loyalty and determination push her onward to seek the "Spike" that will never come.