Frostbite Dragons first appear at the beginning of winter, creeping in with the frosts. They have found their place in human lore as the spirits of snow, since they only reveal themselves during icy weather. In the depths of winter, they cover the world in blankets of snow and are believed to be responsible for the glittering frost that creeps over everything. Although they appear cold and distant, they are actually rather mischievous and enjoy spending time dancing through blizzards.

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.

Anastasius disappeared from Damian's cave almost immediately after hatching, unseen by any of the dragons who live there. He was thought lost until he showed up in the midst of a blizzard nearly a year later, laughing his head off at the sight of everyone's shocked faces. Outside of Winter, he lives in a cave deep below the mountains which is near-freezing year-round and allows him the refuge that Frostbite Dragons crave. During Winter, he can be found running through the forest, leaving frost glittering on the trunks of the trees he passes. Due to his solitude, the rest of his cavemates have taken to referring to him as the "estranged cousin" of the group.