Diamondwing Dragons are named for the myriad tiny scales that grow on their wing membranes, lending them a faceted, lustrous appearance. These meticulous creatures will spend months ranging far and wide to collect the shiniest trinkets and gemstones to adorn their nests. Once his nest is complete, a male Diamondwing will perform an elaborate aerial dance hoping to impress potential mates with his beauty and prowess.

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.

Dialga McMuffins talks exclusively in third person and insists that he wants to be an aeon wyvern when he grows up. Given that he is unusually large for a diamondwing, and significantly larger than an aeon, this makes no sense to anyone around him. He is deathly afraid of little green faeries that may or may not actually be pink, and has a rivalry with "those weather dragons in the Madder Jungle"—which is interesting, since he has never been more than a few hundred kilometers away from Nworset City. Some prankster advised that he go hunt for treasure in the wastes to the northeast—where there is nothing but ice and trees all the way to the corner of the world—and none have seen him since.