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.

Laina d'Lafayette is the eleventh among her brethren in the Lafayette clan. She was discovered buried under a pile of pebbles near the coast of the Arctic Ocean. She was found as an egg when the whole Lafayette clan was on a "field trip" to Greenland. Ana, the assistant Caretaker, said that the Lafayette clan travels to different places in the world every 6 months to give the hatchlings an insight to where they would like to mate when they grow up. "This trip also gives a chance to the Caretakers to learn about different places that dragons are attracted to." She explained.

   Laina was discovered when Iana, who was a hatchling back then, was looking for a place to relieve herself. She decided that she smelled something suspicious under this pile of pebbles and brought Ana to the location where the egg was buried. Laina hatched after this miraculous discovery two months later, on September 6, 1774.