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.

Taahnferr, whose name means Rock of Fire, is one of the more fiercely protective dragons of the clan. She spends her time looking after the eggs and hatchlings, viciously snapping at anyone who comes near, even the other dragons in the cave. She is tough on the new hatches, but it's a tough love situation. She spends most of her time on the ground, and is a powerful runner. She often doesn't need to leave the cave, as the sulfur pool off in one of the branches is nowhere close to being depleted, and relies on the others for hunting, although she's not bad at hunting herself.