Demons are a race of mighty warriors from a different dimension who plague Elementia. They broke through Elementia's outer-dimensional barriers and started attacking the continent.
They were driven back by the combined forces of both the angels and The Great Elementian Army. However, many demons fought back and took over Lava Island. They then infiltrated Kalse Isle and created the Fire Tower. After a long discussion, the Elementian Council decided to allow the demons to live on Lava Island and Kalse Isle, as long as they didn't attack Elementia. The demons agreed to this, although they still terrorise many people's lives.