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.

Despite being surrounded by many kind, gentle females, Twilight is much like most females of her species and has a rather bad attitude and doesn't get on well with the other dragons in the cave. Her striking appearance attracted the attention of several male dragons, all wishing to mate her, but Twilight is very discerning and doesn't choose her mates lightly. If an egg isn't another Hellfire egg, she doesn't want anything to do with it and will usually kick it out of the nest and leave it up to her mate to do with it what he wants.