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. Chronos are often considered to be the most elusive of all Xenowyrm subspecies: they live in the darkest and densest forests, far from civilization. They are masters of time magic, allowing them to manipulate the flow of time at will. It is said that Chrono lairs are protected by a field of magic that makes the minutes tick by at a slow pace for any unwanted visitors.

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.

Chronobiology has an inexplicable fear of sharks. This was not a trait she had as a hatchling or even a young adult, so some time during her life, she must've heard too many stories or watched too much theater. She thinks of sharks as rough-skinned, unthinking monsters just waiting to rip her head off, even those small enough to sit on the tip of her tail. The little ones are equally dangerous, Chronobiology says, because they will lie in wait until her guard is down and swarm and eat her alive. Never mind that the forest and volcano she lives around are entirely devoid of sharks—they will find a way to get her.