Swallowtail Dragons are graceful and quick flyers, much like their namesake bird. They are capable of precise aerial acrobatics, and can reach very high altitudes. Because of this, humans observing these dragons are often astonished at how large they are when confronted up close. A Swallowtail’s diet consists of insects and small mammals plentiful in temperate forests. These dragons are also made remarkable by their paper-thin wing membranes, which allow light to pass through, creating an astonishing effect on starry nights.

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.

ADPEEPER is a small, birdlike dragon with bulging eyes. She likes to sing, and if singing doesn't get someone's attention, she bangs her head against a nearby solid object while screaming shrilly. Even if she is out of one's range of notice (out of smelling range, out of heat-sense range, and so on), one cannot help but feel a sense of dread when she is approaching. Despite her behavior and unpopularity with those who like peace and quiet, ADPEEPER keeps every promise she makes and tries to do everything asked of her. She's loud and annoying, but she likes other people to trust her because she's "A GOOD BIRB". She is easily defeated by an anti-bird cannon, if one happens to have one on hand.