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.

BrimstoneBat is a Brimstone Dragon queen who likes to spend days at sleep in her mountainous cave near a volcano. She has a few little friends that live with her, a colony of bats. They sleep in a slightly different part of the cave, because BrimstoneBat doesn't like to sleep in guano. She does clean their corner every couple days, to keep the cave smelling fresh. There is just a big crack she flushes all the poo down, somewhere deep into the earth. At night, BrimstoneBat likes to spend time watching her little flying friends catch bugs in the moonlight.