The Fain is a transdimensional race from a separate universe. They are creatures from long ago, who revered dragons (especially Godith). The Fain intended to colonize Earth many years ago, but something caused a rift in space to appear and drag back most of the creatures, leaving only a few behind. Gwilanna was one such straggler.
The Fain is often referred to as 'thought forms'. There are several different types of Fain, including the Ix, who are very murderous and want to exterminate all dragons. They recently attempted to raise an anti-dragon, or darkling, using dark fire, to eliminate the dragons and most humans. The humans they want to leave alive will be controlled by them. Some well-known Fain includes the Fain who inhabited Arthur, the Fain who commingled with Bonnington, and the Ix:risor who possessed Lucy. They are first introduced to the series in Fire Star and are also the main antagonist in The Fire Eternal. Also, it is known that one particular at the end of Fire Star. In Fire World, they are referred to as the "Higher" who rule and protect Co:pern:ica from the librarium above the aerie.
Fire star[]
In fire star G’reth ventures through space and time to the world of the fain. The fain commingle with G’reth and they go to earth together. As we soon find out Gwillina is a Fain, they tried invading earth but failed but Gwillina was the only one who commingled in time. Elizabeth Pennykettle notices a shift in the auma of the earth finally G’reth tells what happened. Then the Ix: came and possessed many people including Arthur, brother Darius and Tootega. Tootega (as the Fain) tried killing Grockle and killing David Rain.