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.

When this dragon's existence wasn't yet known and nearby communities noticed similar cases of poisoning with pierce wounds, some folks thought it was someone attacking with poisoned darts from afar. They would say, "Sarbacane, the sarbacane" whenever another patient was trundled to the medical tower for care. Their claims were bolstered by the apparent fact that the perpetrator was human-sized. By the time this fellow was found in the forest and forcefully interviewed, the little "Sarbacane, the sarbacane" chant stuck, and that's what everyone called him going forward. His spurs were the cause of the poisoning, and it turned out he wasn't shooting from far away but simply was very quiet and very fast. He claimed that he had stabbed his victims with such speed and silence only out of self-defense, and while people find that difficult to believe, they agree his leaving victims otherwise intact on frequented paths where they'd be noticed was not something a malevolent dragon would do.