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.

Due to Fruthero's natural habitat, he is rather isolated from other dragons. As such, he is lonely—sometimes he thinks none of the other dragons like him, and so avoid him. He is a rather intellectually dim dragon—despite his bio-luminescence—the other dragons really just don't know him that well. This is because he only comes to the surface to breed; since he is relatively unknown by the other dragons, his breeding attempts are often unsuccessful. To this day, he has had very very few of his children survive beyond the shell.