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.

Bonilla spent his childhood in a little den, where a bunch of hatchlings running around made it feel more crowded than it really was. However, he was less concerned about the lack of space and caretakers and more about his lack of legs. He was envious that a bunch of hatchlings could run around, and he waited for many years for his limbs to grow in. Never mind that even as a youngster barely able to make thoughtful decisions, he could fly with the aid of magic, which other children in turn envied. Once he grew to be a responsible adult, Bonilla migrated to a forest a stone's throw from the mountain town of Grape. The residents don't know why this xenowyrm likes to silently watch the marketplace during the busiest hours but think he might be offering protection, or making sure plants aren't being harmed, or something else. He visits because he's never seen creatures where half their body length is legs, until he moved near Grape.