Serea is the Sae, or Queen of the Fire Spirits. She resides in her palace in the heart of the Blackstone mountians. Her full title is Sae Serea, and her job is to protect the other fire spirits from the other forces of nature. Serea became the Sae after the older Sae died.
Serea defeated the Earth Spirits with her army at Vale. Serea made the King of the Earth Spirits swear fealty to the fire spirits and pay a tribute of animals and slaves each year. This ended part of the four way war between the Earth, Water, Fire, and Air kingdoms.