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.

Raised by Sssiks'harl, a Sunset dragon, Uoi'notan Reiken, whose name means Hell's Fire, is a lot calmer than what his kind is known to be, but he still holds that fiery temper when he's had enough and tends to be antisocial at times.

Reiken was not the only Hellfire of their ragtag clan. The young, female Ilharess d'uoi'nota had taken a liking to him and claimed him as her mate, even with him wanting to keep his distance from her because of her over protectiveness, keeping the other females away from him.