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.

Arekuruu arashi only travels in raging lightning storms, hence his name. He makes the storms many times greater than they would be on their own. He can also make a storm last for weeks and keep up its strength. He does, however, have to find a new storm every once and a while once the one he was traveling in dies down. Arekuruu is a very vengeful dragon. If someone makes him mad, they very likely to be struck down by a strong bolt of lightning.

His name means raging storm.