Originating from a single species that thrived in ancient times, Xenowyrms have become an incredibly diverse breed whose appearances vary depending on their habitats. Each Xenowyrm subspecies is heavily reliant on the power of different types of mana, making them powerful magic users. Gaia, despite their large size, are the lightest of all Xenowyrm subspecies. They possess the ability to use incredibly powerful life magic, though most of their efforts are concentrated; to them, nothing is more important than letting plant life thrive. Adult Gaia will use their magic to grow vegetation around themselves so they can spread it wherever they travel.

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.

Mistress Gaia quickly became an accepted and respected member of her tribe. Raised alongside hatchlings of the other Xenowyrm varieties, she proved to be the sweetest and most empathic. Gaia would frequently try to heal the others when they hurt themselves, although her attempts varied in success. When she matured, she quickly discovered that her powers worked best on plants, and set about covering the tribe's territory in vegetation. Thanks to her efforts, the tribe was able to set up a small farm, which she spends much of her time overseeing.