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.

Sternlein is an extremely curious dragon. He always inquires about everything and never is content with anything less than a complete and precise answer. This wouldn't be too bad if his questions wouldn't regularly run along the lines of "how many seas must the Blacktip sail, before he can sleep in the sand" or "do you know how many stars are in the sky"—some Nebulas have tried to answer at least the latter but so far the best approximation they could come up with was: a lot.