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.

A great beast of the deep, Leviathan Gleaming is ranked second in the Gleaming clan's secondary ring of command. He and RagingSeas Gleaming keep watch for threats via the waters of their home. Leviathan usually only patrols however, he doesn't fight unless absolutely necessary. When he's not doing that, Leviathan can usually be found with Oceans Gleaming. The two have been sweethearts for a long time (although they won't admit it) and are expected to become an Eternal Pair soon.