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.

Known as the queen of the ocean by any who want to impress her, Mugnoch (in ancient draconic, her name means "deep below") has gone farther away from the clan than any before her, even Virixio and Tribume.  Mugnoch knows the location of all the underwater currents, and can use them to quickly navigate underwater.  She has also gone to depths that are rumored to be below even Ternocu (know one can actually know, because no one has seen him for years.)

Although she is pro-mint, Mugnoch is incapable of going on land for battle.  Being highly competitive, this greatly irks her.  Therefore, Mugnoch has promised to do whatever she can to keep the winged dragons from flying over water.