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.

Unlike her vicious counterpart, Kapu prefers light showers and long rumbles of thunder to horrid tempests and cracking lightning. She will only whip up a vile storm in defense of her clan and uses her influence to help undo the damage caused by Naxxus. After the fields of the villages have been engulfed by lightning fire, she will see to it that a soft rain will help re-grow the lost crops. She hasn't spent much time looking for a mate but, she loves to help the Archbaron tend to the hatchlings and eggs.