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.

Tabmu talks faster than his mind can form the sentences, and he admittedly doesn't talk very fast. He's a pretty good problem-solver and really likes doing small things to make life better for everyone in his unit, but finding words and putting them into sentences has never been a strong suit. He hardly uses telepathy after that time he spoke this way to someone, who then fainted for unknown reasons (but he suspects he hurt his mind somehow). Luckily, everybody is forgiving, and some dragons help Tabmu find his words by filling in his pauses. Most members of the unit are emotive and tend to value group harmony over individual happiness, so he has an uneasy feeling whenever he meets dragons who are solitary and have little knowledge of or respect for social etiquette.