Thunder Dragons are the masters of electricity. Their wings gather energy as they soar through the clouds, and when they clap their wings together they can create devastating arcs of lightning. They can stay airborne nearly indefinitely, landing only to sleep and breed; they catch their prey from the air and take moisture from the clouds. A thunder dragon’s roar is considered to be an omen of misfortune.

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.

Mustardstorm was the first dragon that Strim decided was up to her standards. Mustardstorm, however, had absolutely no idea about that. He thought that she was just an average female dragon whose eye he had caught. He didn't realize that she was far older than he, partially because he considered it rude to ask her age. He is content to just chill, nothing is wrong in his little world, and that's the way he likes it.