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.

Terakar is judged to be the most mysterious dragon by the rest of the clan.  He would spend up to two weeks traveling from the location of the cave to the ocean and would come back using the water tunnel Duuru made and tell stories about an underwater city.  He is quite energetic and always loves adventures.  The clan members believe Terakar's stories and he wishes he could bring them there.  Terakar once told them the time he had made friends with Subject Delta. Terakar defends himself by spouting a jet of water and was taught the human language.