Eons before the Galactic Civil War, the Arbrans who originally inhabited the planet Arbra had discovered a method to rid themselves of the emotions of anger, hatred, and fear. But when they removed the dark energy from their bodies, it manifested itself into a sapient being that called himself the Darker. The Arbrans could not bring themselves to destroy the Darker because, despite the fact that he was evil, he was still a part of them. Instead they imprisoned the malevolent creature in an underground city using a force screen, and they abandoned Arbra leaving their evil aspect behind. Over the millennia, a new telepathic species developed on Arbra called Hoojibs. The Hoojibs made their home beneath the surface of the planet, but had never entered the tunnel leading to the Darker’s prison because they sensed great evil there.

GM NOTES

When I put one of my groups up against The Darker, I added another wrinkle: failing Fear checks against it caused the character(s) to encounter fully believable (and deadly) illusions based upon their greatest fears, a la It.