Bright-Breasted Wyverns are a breed of dragon easily recognized by their bright red markings. They are a small breed, only the size of a full-grown man. However, they have developed poisonous barbs on their feet to make up for their size. Their coloration is used to warn off potential predators of the danger, and is also used to attract mates. They are very social, and can often be seen preening in large groups.

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.

This dragon derives his name from various factors, but all are related to the fly that shares his name. First, a genetic peculiarity has left the blue portions of his forearms with a more metallic sheen than usual, making them glint like a bluebottle's body when the light strikes them. Secondly, he is in the habit of hovering around near trash piles, sorting for delicious munchies abandoned amongst the waste--making him look like an enormous, rather pretty fly. The third factor, however, is one that didn't come until he had already received his name. Curious about it, he asked a local what it meant, and said person explained and pointed out one of the corresponding flies. Bluebottle thought it was adorable and now daily flies around people's heads, buzzing loudly. The only thing that keeps the locals from snapping and hiring someone to shoot him repeatedly is that he really is a sweetheart despite his obnoxiousness.