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.

Lumino is best friends with Sommergewitter. The two dragonesses are caught in a kind of love-square with two Sunsongs but where her friend mopes and quarrels with herself, Lumino has a quiet acceptance around her. She is happy with herself and doesn't ask for more of the two males than they are ready to give and is content with herself. This gives her a warm confidence that makes her more attractive in the eyes of most dragons. She just wishes that Sommergewitter could learn to be happy as well.