Seasonal Dragons take on the characteristics of the season during which they are born. Thus, eggs that are laid in spring match the pink flowers and green buds of spring, and those that are laid in the summer grow to depict the bright green of the forest trees and the yellow of the sun. Eggs laid in autumn display the bright colors of leaves falling from trees, and those that are laid during winter take on the appearance of the icy snow.

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.

Tunat um Lavees is an anagram of "Autumn Leaves". When hatched, Tunat always played with his adult friends Magilio (a Magi) and Scoopy Redio (a red). They treated them like family. Tunat liked that he could always make a bed quickly by using leaves. Tunat is the curious type, and never uses his leaves for evil. Tunat has taken a Winter dragon under his wing, hoping to care for it like Magilio and Scoopy did for him.