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.

MostlyThunder is a loud Thunder Dragon. He not only roars multiple times a day, but he uses his lightening to make huge booms of thunder. Wherever he goes, the loud noises he makes scare wildlife and livestock. MostlyThunder doesn't usually strike things with his lightening, he only wants to make it arc across the sky and make a huge sound. He sneaks up on his prey in early morning and in the evenings, and usually doesn't eat during the day.