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.

Pebble Breath is a dragon with a nasty temper. He feels like his landlord doesn't listen to his complaints and that his neighbors are always too loud. Once, some dragon tried to blackmail him, but he breathed fire at that criminal to show how much he cared. Well, that did land him in jail, since that wimpy dragon turned over information about the odd jobs he did for the mob. Prison is at least quiet, since he is one of the first inmates convicted and has his own fireproof cell.