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 the ferocious reputation of her breed, Trill was raised by Suite the Pillow Dragon into a mellow, placid dragon. Following the example set by her adoptive mother, Trill naps for up to 18 hours a day in her cave home and only emerges to eat, drink and answer the call of nature. Due to her odd sleeping patterns, she often roams the night landscape and rarely sees much of the day. Recently on one such expedition into the world outside her cave she met Nocturne whom she found especially odd. Trill now helps Nocturne in his attempts to overcome the bipolar characteristic of his breed; although she doesn't mind him remaining inactive for long periods of time as it gives her ample time for sleep.