Nebula Dragons are nocturnal creatures. With the best eyesight to be found, they are often seen staring into space. Each dragon tends to observe a particular nebula and will eventually change their colors and patterns to match it. As the nebula changes over time, the dragon changes with it. The more intricate the design of the nebula, the better chance an individual has of attracting a mate. It is said that the markings on no two Nebula Dragons will be exactly the same.

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.

Disinterested in the physical plains that surround him, Talostar fixes his gaze to the stars above, observing the patterns and movements of the heavens with the intensity of the loremasters and astronomers of old. His unwavering scrutiny intimidates many of the younger dragons in the cave, those who have had little time to become used to Talo's eccentricities. Most of his fellows have learned not bother the stargazer too often: should his concentration be broken, the Nebula dragon has had a history of coldly lashing out at those who have distracted him from his "greater calling."