Valin Stratos

Valin Stratos was a Dark Jedi serving the Galactic Empire. In 3 ABY, during the Galactic Civil War, he was sent to Socorro, a planet in the Mid Rim, to besiege a Rebel Alliance outpost. He did so, but called on immense dark side power during the battles with Rebel forces. The powers corrupted the Dark Jedi, and Valin began to grow insane. When a Jedi arrived on the planet to aid the Rebel forces and face Valin, he drew on more power, which broke the last sanity in him. Valin ordered his Imperial Army troops on an all out attack at the outpost. It was a suicidal attack, and most of the Army troops were killed.

Meanwhile, the Jedi faced the corrupted Valin in his camp. The Dark Jedi slew several of his own troopers, just because "they got in the way", and threw several others at the attacking Jedi, who slew them. In a duel, Valin was defeated, but managed to set off an explosive which detonated the Imperial camp, killing all of the Rebels and Imperials in the area. Emperor Palpatine and Darth Vader later recalled that he was a "failed experiment", and covered up the information on his massacre, stating that the Jedi committed the act.