Pyropellis Wyverns are most commonly encountered swooping through the trenches and craters that dot their volcanic abodes, bathed in stifling heat. While their tough, mottled hides blend in seamlessly with the volcanic rock that surrounds them, Pyropellis Wyverns stand out due to the fervent flames that cloak their backs. Unable to produce a flame, these dragons secrete a highly flammable substance from their backs, which they will find some way to set alight. This fire primarily serves to intimidate and daze unfriendly strangers, keeping snapping maws away from the necks and back of the dragon. The flames also serve as a way to bond: young hatchlings are often first set aflame by their parents. Fire-breathing dragons may supply their mates with flames. It is not uncommon to find a Pyropellis sporting flames unique to other species of dragons, having made contact with those flames.

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.

Postfire wears glasses with darkened lenses whenever she's somewhere populated. She didn't know what their purpose was when she first found them, but she's decided that they're good for ignoring others. With the flames on her head producing a flickering light on the lenses, she can close her eyes with most viewers none the wiser. If they refuse to stop bothering her or challenge her, she hooks the arm with her left thumb to pull the glasses off as a gesture of aggression and stares at them while talking down to them. Although Postfire is one of the smartest members of the community and one of the foremost authorities on the defensive and offensively-defensive spells in place throughout the network and outposts, most dragons outside immediate family and those who've worked with her for years loathe interacting with her and draw lots when they have to.