During the Cold War era, a period of conflict between the Galactic Republic and the newly formed Sith Empire, a Sith Pureblood named Krannus established a death cult. This group revered the Sith Emperor, convinced that faithful death in his name would result in immortality bestowed by their leader. Krannus and his followers plotted to trigger an explosion by detonating the central power source of the prison planet Belsavis. However, their plan was thwarted by the intervention of the Jedi Knight recognized as the Hero of Tython, who prevented the detonation of the core.