Glystere Wyrms spend most of the year deep in arctic seas. As winter approaches, these dragons will emerge from beneath the ice to congregate midair in search of a mate, where the glitter of mana crystals down their bodies can be seen as they fly across the night sky. Glystere Wyrms are known to take a respite from flying by looping around trees, over homes, or across high-hanging cliff edges while entwined with others of their kind. The colorful light of their mana crystals and the icicles formed down their undersides often leads them to be mistaken for festive decor when at rest. Traveling with friends and families to find the most brilliant display of these wyrms has become a steadfast tradition during the holiday season.

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.

Nagusame dislikes loud chatter, and prefers to spend time in the company of a few friends and family members, rather than mingling with crowds. During the wintertime, this can be somewhat difficult as he's constantly being woken up from naps by young children or hatchlings come to admire his mana crystals. Over the years, Nagusame has sought increasingly more and more obscure napping spots, in an attempt to get some rest during the holiday season. Sometimes he asks his family to simply bury most of him in a snowdrift before he takes a nap. He'd rather have someone unknowingly walk over his back than have them fawn over him while he's trying to sleep.