Hellfire Wyverns are so named for their foul tempers and fiery visages. Their social structure places all females above all males, due to superior physical characteristics and violent dispositions. Forced subservience of the males causes them to become vicious, petty, antisocial, and passive-aggressive compared to the aggressive and social females. However, orphaned hatchlings raised by foster parents of another species can develop surprisingly even tempers and mellow dispositions, proving that their defining unpleasant nature is, in fact, a learned behavior.

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.

Aoihi Tsubasa, meaning "Blue Fire Wing", is a quick-witted dragon who loves to speak to others. She loves to socially interact with others, though she generally avoids crowds because she doesn't like not being heard by everyone. Aoihi, as much as she seems, is not conceited. Rather, she has a hard time understanding that not everyone wants to hear her. She is very selfless and often is found helping others, humans and dragons alike.