Sunset Dragons are closely related to sunrise dragons. However, their behaviors differ greatly. Sunset Dragons generally live alone or in small packs. They are more active in the evening, hunting and performing all of their daily tasks as the sun sets.

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.

Aurosian is the current guardian of Zerhai's scroll. He is the first adult and is protective of all those who have come after him. Recently he mated with Izlanyth, and at first they went their separate ways after the breeding, however as time nears where he can breed again he considers her again and she seems to do the same. They might end up being a mated pair. His favorite companions are the frozen hatchlings Rayana and Siva.