Brimstone Dragons live in dry arid areas such as deserts where they feed mainly on sheep, goats and the occasional camel. Their favorite habitat is ideally situated close to the wastelands around active volcanoes. This is due to an important part of their diet—sulfur, which they obtain from deposits near volcanic gas vents. Instead of fire, these dragons use the sulfur they ingest to create a noxious gas which they store in their large throat pouches. When in danger, this gas is released in a large cloud. They also eat other mineral rich substances—including charcoal—and will drink the mineral rich (but slightly acidic) water commonly found in deserts and volcanic regions.

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.

Inside the stomach of this particular Brimstone Dragon is a large amount of sulfur. This sulfur sticks to the food because the food gets sticky after going through the esophagus and causes the food the dragon eats to be almost completely useless for the intestines. The sulfur makes most food indigestible. The food that is able to be digested, consists mostly of moss and sand bugs. These cause the bacteria in the intestines to create massive amounts of nasty smelling gas that is let out of the body frequently. These gasses often stay near the scales of the dragon, where the bacteria in the gasses are able to reproduce. These bacteria make the scales shine like pure gold.