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.

Zarazo had been exiled from his clan for 'suspicious behavior', since he was the only Nebula dragon. Disheartened, he was sent to the far north, to live out the rest of his days among the snowy mountain peaks. In the arctic above the clouds, there was no pollution, and the air was much cleaner and clearer than anywhere else on earth, making it the best spot on earth to gaze at the stars. He stared at the sky day and night, only stopping to sleep and catch fish, waiting for his clan to return, making him an especially beautiful Nebula. He's abandoned all thoughts of his clan now, and stays relatively quiet and shy.