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.

Purple Horse of Wonder is a acclaimed novelist and avid reader. Although she is the only female horse dragon in her cave, she has no interest in a mate. Apparently, Wonder reads many books about strong women, and thinks that strong women don't get married. She refuses to produce eggs. This causes much annoyance to the other dragons, as they think she is being ridiculous.

Wonder is a strong feminist, and hates all things involving men. She even hates her nickname (Wonder) because she thinks its too much of a stereotypical female name. She expects others to call her either her given name of 'Purple Horse of Wonder' or her penname 'Elena.' Why she thinks that Elena is a better name than Wonder is a mystery.