Desolator crisis

Near the end of the Cold War between the Galactic Republic and the reconstituted Sith Empire, a military crisis erupted in 3643 BBY when the Sith Lord Darth Angral waged a personal war of vengeance upon the Republic and the Jedi Order in order to gain vengeance for the death of his son Tarnis at the hands of a young Jedi Knight. After Tarnis's attempt to use the Republic superweapon known as the Planet Prison against the Republic's capital planet of Coruscant failed, his father put Tarnis's final gift—information on the rest of the Republic superweapon initiative—to use and dispatched his three Sith apprentices, Lords Praven, Sadic, and Nefarid, to take control of the Republic's weapons facilities on Tatooine, Nar Shaddaa, and Alderaan. While the Empire publicly disavowed Angral's actions, they secretly lent him support, supplying his apprentices with support from the Imperial Military and dispatching the Imperial spymaster Watcher One to capture the Republic scientist Nasan Godera on the planet Taris.

Unable to authorize a military response, General Var Suthra sent the Jedi Knight who killed Tarnis on missions across the galaxy with the astromech droid T7-O1 and the Padawan Kira Carsen to halt Angral's plans. After gathering information on the planet Ord Mantell, the Knight rescued Doctor Godera from Watcher One on Taris, but Agent Galen of the Republic Strategic Information Service—the Republic's intelligence agency—was captured and converted into an unwilling slave by Sadic using the Power Guard supersoldier project on Nar Shaddaa. However, the Knight and Galen were able to defeat Sadic and destroy the Power Guard project, preventing Angral's apprentice from creating an army of mind-controlled supersoldiers from the refugees on the moon. The Sith Emperor himself intervened in the conflict in an attempt to recover Carsen; the Sith ruler sent Valis—a Child of the Emperor, an extension of the Emperor's own will—to lure out and capture Carsen, but the Knight and the former Child defeated the Sith.

Angral's other apprentices were also successful in capturing their assigned weapons projects, with Praven defeating the Jedi Master Bela Kiwiiks who was sent to guard the Shock Drum on Tatooine and Nefarid trapping Master Orgus Din in a ruined laboratory after stealing the Death Mark laser. However, Praven was disgusted by his own Master's dishonorable actions and was convinced to abandon the Sith by the Knight, and the Jedi was able to rescue Kiwiiks from near-death and destroy the Shock Drum before it tore Tatooine apart. The mission to Alderaan was hampered by the interference of an Imperial spy named Aleyna Hark, but the Knight and crew managed to prevent the assassination of the Alderaanian noble Horis Thul—an action that also saved the budding peace negotiations that were working towards ending Alderaan's brutal civil war. But though the Jedi defeated Angral's apprentice Nefarid and destroyed the Death Mark laser, Orgus Din's attempt to infiltrate Angral's warship Oppressor and confront his old enemy ended in the Jedi Master's death.

The crisis reached its height when Angral, having constructed a superweapon known as the Desolator by combining the Republic's weapon technologies, tested his new weapon on the Republic agriworld of Uphrades. The attack, which devastated Uphrades's surface and killed millions, was also intended to draw out Tarnis's killer, and Angral set up a confrontation by attacking the Jedi Order's homeworld of Tython. While the Desolator recharged, the Knight and Carsen boarded the Oppressor and disabled the superweapon before confronting Angral on the bridge of his warship. The resultant battle saw the death of Darth Angral and the destruction of the Oppressor, signalling the end of the Desolator weapon and the current crisis, but Angral's war was one of several factors that led to the dissolution of the Treaty of Coruscant and the resumption of war in the months that followed.

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