Deep Sea Dragons, as their name suggests, spend most of their time in the darkest depths of the sea. They have a bioluminescent dorsal spine that serves to attract prey and communicate with their own kind. As with many deep sea animals, they generally eat whatever they can manage to bait. They rarely leave the ocean floor, surfacing only during breeding season. When they do choose to travel to the shallower depths, they avoid bright lights and will only come up far away from shore.

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.

Lunar is a distant dragon, staying in her saltwater lake, which she has the job of protecting. She doesn't communicate often with the other dragons, and thus no one really knows much about her. All they know is the lake is safe with Lunar. Lunar seems to react fine on her own, and occasionally Broken will come over and swim with her. The two are good friends, but whenever someone asks Broken what Lunar is like, she won't reply. If she does all she'll say is "She's like a rose and a chocolate bar. Sometimes she has thorns, other times she's sweet." No one really understands what the young dragon means by this.