Mutamore Dragons are a mostly solitary breed, preferring to be alone in the waterways of the world for most of the year. However, when winter begins to wane, these normally grouchy dragons undergo a massive personality shift and become excessively chipper and incredibly social with the solitary focus of pairing up themselves—and other—dragons. They become such annoyingly happy and persistent match-makers that other dragons have been known to pretend to be pairs when one is in the area, just to avoid the attentions of the Mutamore Dragons. This temporary pairing up tends to lead otherwise disinterested dragons into a better appreciation of one another, resulting in lasting relationships. This has given the Mutamores the false reputation of being good at match-making.

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.

Kokkei tells terrible jokes. Ironically, his sociable jokester demeanor tends to be alright in communication; it's his witticism material that tends to be either excessively silly or simply too confusing to be considered funny. This combination makes for utter disaster during the Valentine's season, when he attempts to give advice to his siblings on how to plan quirky dates to "for sure make the other dragon smile". Those who have suffered embarrassment because of Kokkei's romantic scenario suggestions have since learned to just laugh awkwardly and then quickly find someone else to talk to when he shows up.