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.

Within the sanctuary of Fellfire, many dragons live in peace, with wide swathes of territory for each Drake or Drakka. They are also free to interact as they will, as long as no permanent damage is done.

Centennial Flames is a growing Matriarch of the Fellfire Flock, who has taken her under their collective wing ever since her egg was abandoned. She takes great pride in the heat and strength of her flames, and she is extremely volatile, due to Dersa having played with her mind when she was still a hatchling. Hydreya or Osine (sometimes both) have had to step in to stop them from fighting. She shows little affection, preferring instead to tussle and spar with the other members of the Flock. She does have her moments of peace and gentle warmth around her caretaker, though. Centennial looks up to the leader of the Fellfire above all others, staying her violent actions when Shingeki says but a word in rebuke.