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.

Ullvax grew into what is quite possibly one of the laziest, most apathetic dragons of his adoptive flock. He spends every day lounging atop the mouth of his cavern soaking up the sun, giving a brief hunt at nightfall before returning to spend another several hours sleeping. He never hunts for anyone else, he refuses to partake in territorial spats, and in the case of a disaster it's commonly assumed that he wouldn't even lift his head in response. He simply doesn't care.