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.

Vincent is a friendly young dragon who likes to dabble in magics. For a dabbler he is actually quite talented but the most important thing is that he knows when to keep his claws away from something because it is too dangerous.

When he once stumbled upon a Fever hatchling named Kimono, he stopped her from doing some really, really stupid things with summoning magics. While talking with her, he quickly realised that she was terribly alone and hurt after her mother's death and her judgement about danger not to be trusted. Vincent decided to taker her under his wings and since the age difference wasn't all that huge they became very close friends. He thinks of her as his little sister and wants to protect her but he has the terrible suspicion that she holds secrets from him.