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.

Much like many of her kind, Nacht au Feuer is aggressive, however, the first of her breed in the group of dragons makes her less hostile than others of her species raised to it -- instead learning the trait from many of the black dragons, particularly Black Wings. A small hellfire in her own right, Nach au Feuer spends her time protecting her group's eggs, and, remarkably, treats the younger dragons and their keeper like her own beloved hatchlings -- not always a good thing.