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.

Abandoned as an egg, he was adopted into Kurei's care and raised mostly by Lily, the female earth dragon that continues to live with him. She taught him how to be a true dragon, but he never grew the fiery temper his owner had expected and feared he would get. He does show an instinctual aggression toward adult dragons that he deems not part of his 'territory', the area around Kurei's dragon nursery, though, but it's been proven to be all for show. The wyvern is all roar, and no bite, though there will be the occasional wave of fire, if you anger his hellfire daughter, or harm any dragon that is within his territory.