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.

Xana is, as all Deep-Sea dragons are, a solitary dragon. This does not mean that she doesn't occasionally get lonely, it just means that it takes longer for her to feel lonely. And, as a little bonus, she doesn't go crazy from lack of contact.

But, when she is lonely, it lasts a long time. She's not really used to this emotion, so she doesn't know that interacting with someone will usually rid her of it. So, it's always a surprise when she feels better after Isaac visits.

Lately, she's been leaving the Flaming Abyss to seek him out whenever she feels lonely, but since this doesn't happen often, she hasn't been leaving it often.