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. Aquilo live high in the firmament and are almost never seen on the ground. They are all too happy to greet travelers going through the mountains, and also seeing their panic as the Aquilos dive from great heights towards them, only to change course at the last moment and soar back into the sky. Many Aquilo enjoy testing their agility and mastery of air magics in dangerous feats of flying at one another, only to twist and harmlessly pass one another in intricate patterns. They try, with little success, to get the more foul-tempered Astrapi to join in their games.

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.

Carol is a member of the "Action Group", a club of sorts that was initially formed on a lark. Years later, it is a genuine club with a registration and contains a lot of esteemed dragons with memorable achievements to their names. His path to membership involved air magic and flying games, two things he greatly enjoys. He's not actually sure what parts of his favorite activities got the attention of senior members of the Action Group, but he's very pleased and won't question their decision to recruit him in case they change their minds about letting him be part of the club. Carol usually dozes off when the Action Group convenes to talk about legislation and lobbying and whatever, waking up every so often to remember where he is and what's being talked about. That's what occurs during peaceful meetings; when they involve members who can't stand each other, he's alert and agitated, trying to keep arguments from getting messy using jokes and distracting gusts of wind to break them up.