Darker The Darker was a being who was composed of the dark energy of the Arbran people , and existed for millennia trapped in an underground city on the planet Arbra . When the Alliance to Restore the Republic constructed a base on the planet , he attempted to escape using captured droids , but he was thwarted and destroyed by the Rebels Chewbacca , C - 3PO , and Plif . Biography . 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 Hoojib s . 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 . Following the Battle of Hoth , the Rebel Alliance established their new base of operations on Arbra . The Darker detected that the Rebels had the technology to free him from his prison so he devised a plan to lure the astromech droid R2 - D2 into his city with a feigned plea for help . He captured and disassembled the droid intending to use the components to build a mechanism to disable the force screen which held him captive . Soon more Rebels entered the Darker ' s city as Chewbacca , C - 3PO , Plif , and several other Hoojibs investigated Artoo ' s disappearance . The Darker intended to dismantle Threepio as well , and used his powers over dark emotions to bring forth hatred in Chewbacca toward C - 3PO . But the protocol droid was able to overcome the Darker ' s influence over the Wookiee by calling upon Chewbacca ' s loyalty to Han Solo . Threepio discovered an ancient Arbran text which revealed the Darker ' s weakness : the power of the force screen which held the Darker within the city would destroy him if he contacted it . Chewbacca then grasped the Darker and hurled him into the force screen , destroying the abomination , and the screen imploded , razing the ancient city to the ground . Physical appearance . The Darker appeared as a green - skinned , biped male humanoid . He had two pairs of arms , a primary pair and a smaller secondary pair which he usually kept hidden beneath his cloak . It is not known whether the Darker ' s physical appearance in any way reflected the appearance of the Arbrans who created him ; he could be more typical of a space wraith or a starweird , rather than a dark side Force - ghost . Special abilities . The Darker could float in the air to move about his city , and he had control over dark emotions in living creatures within the confines of the force screen . He was able to heighten beings ' fear and anger by making visual contact , although the effect was temporary and apparently required some concentration to maintain . Additionally , this control could be broken by a strong external emotional trigger that would overcome the dark emotional influence . The Darker was also exceptionally resistant to physical attacks ; he was struck directly by a shot from Chewbacca ' s bowcaster at short range with no apparent ill effects .