Storm Dragons are the masters of the skies. They are excellent fliers and land only to rest and eat. In addition, they have full control of the weather. They are very hot-tempered and easily angered. They will attack any human that bothers them, conjuring strong winds and dangerous lightning.

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.

Earthly Thunderclap is a volatile Storm dragon. Her emotions are highly changeable and it doesn't take a lot to offend her. Fortunately for the other dragons, Thunderclap tends to shun society. It is rare to actually see Thunderclap, since she prefers to fly above the cloud layer. The most accurate hint of her presence in an area is a violent storm or large clouds. Unsurprisingly, most of the dragons in the Land of HeroHorse presume her to be a rather heartless and inconsiderate beast; after all, she doesn't seem to care where and when she whips up a storm. However, there is a side to Thunderclap that nobody has even dreamt of, let alone seen.

Earthly Thunderclap watches over the eggs and hatchlings of the Land of HeroHorse. Thunderclap's powers become most useful when an egg or a hatchling has fallen sick. She shrouds them in a cloud of fog and waits for them to recover, safe from prying eyes. Needless to say, nobody suspects Thunderclap to be the mysterious guardian of the eggs.