Spitfires are a desert breed of dragon. Their dull brown bodies contrast with their brilliant turquoise markings, and they only blaze brighter when these dragons fight. Spitfires are notorious for their territorial natures, and the wing-edges of most are ripped and tattered before their first year is out. Spitfires are also noteworthy for their brilliant blue fire, which is used not for hunting or fighting, but rather for making glass caves from the sand, in which the dragons can soak up the sun.

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.

Nobody in their right mind would willingly deal with Polonium, and it's safe to say that most would pick Phosphorus the Hellfire over her. She's vicious and aggressive to everyone and won't listen to reason, fiercely attacking anything that moves with her sharp claws, teeth, and even her flame breath that most Spitfires wouldn't use against a fellow dragon. Much effort has been put into attempts to suppress Polonium's brutish nature and make her behave at least a bit like a dragon, as opposed to a wild animal. None of these have been successful, though; the only thing that has some impact on Polonium is a muzzle that Gold has somehow forced her to wear, which at least keeps her from setting the entire Sixth Period aflame.