this Dark Jedi was a scientist as well as an adept with the Force. Often referred to as a Mage Lord, Cronal was one of Emperor Palpatine's most gifted Dark Jedi. It was Cronal's "Science of Darkness" that was used to ensure that Force Detectors were capable of identifying Force-sensitive individuals. He attempted to twist the Trailian race into Dark Side monsters via genetic manipulation and Dark Side magic, hoping to bring down the New Republic. His plans were thwarted by a group of New Republic agents, accompanied by Jedi Knights, discovered his castle and defeated him in combat. However, the agents never found his body. Investigation into Cronal's history revealed that he was, during the height of the Galactic Civil War, the Imperial agent known as Blackhole. He was also found to have been the father of the Dark Jedi Sariss.