Shadow Walkers are a strange breed that possess the ability to slip between the planes of reality, becoming immaterial. This allows them to hide in the shadows, either hunting from the concealment of near invisibility or evading enemies. Though they become corporeal to mate or to eat, they spend most of the rest of their lives walking in the shadows. Shadow Walkers are wary creatures, though on dark autumn evenings when the leaves fall to swirl in the chill, rain damp air, they may be seen drifting out from the shadows.

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.

Dos has a deep-rooted hatred of Thunder dragons. A father who left the family before she hatched and a couple of attempts to find him during her hatchling years that went very, very unfortunately will do that to an impressionable young dragoness. So when Dos isn't busy hunting for food or sleeping, she will most often be found near the lair of one of the resident Thunders, haunting them from the shadows. Her random wailings and the cold shivers she runs over her victim's back are enough to drive even the sanest dragon crazy over time.