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.

"Merry Christmas! Merry Christmas! MERRY FUDGIN' CHRISTMAS!" this dragon screams, all while stomping around and flattening wailing children under over sized presents. Born from the extremely awkward pairing of a snow angel and a hellfire wyvern, Tatarus combines the nature of both by giving presents AGGRESSIVELY. Those few souls brave or insane enough to not run away screaming at the sight of a raging hellfire in a Santa hat are, however, pleasantly surprised at the end of his tirade; the presents with which he'd just finished smacking them about the head contain wondrously lovely gifts!