Not too long after the Battle of Yavin, Luke Skywalker and R2-D2 traveled to the planet Radaric to collect a credit chip for the Rebel Alliance. After accomplishing the mission, Luke felt a disturbance in the force and decided to find out what was causing the disturbance. Skywalker searched lead him to a room where he found several corpses and an ancient sys lightsaber that belonged to Darth Atreus. As soon as Luke picked up the lightsaber, several imperial stormtroopers arrived prompting the young Jedi to ignite the regulated lightsaber. Overwhelmed by the malevolence imbued in the sys lightsaber, Skywalker was filled with a sense of rage and indignation, which resulted in him slaughtering all of the imperial troopers. With the stormtroopers dead in his senses cleared, Skywalker was surprised by the unnatural anger that he had felt when the lightsaber was ignited, and told R2-D2 that during the fight it was like watching without being able to stop himself, but that now he was fine. Soon thereafter, Luke once again ignited the red-bladed lightsaber, but was able to control his anger and, to avoid it from overwhelming him again, destroyed the sys saber with his blue-bladed lightsaber.