Vitiate

The Sith Emperor was a mysterious male Dark Lord of the Sith.

Biography
The Emperor survived the ancient Sith Empire's defeat during the Great Hyperspace War, and fled to Dromund Kaas with his most trusted Sith Lords. There, he began building a new, revitalized Empire, vowing to return and defeat the Republic.

Using dark rituals, the Emperor prolonged his life and his undisputed rule.

In the time after the Mandalorian Wars eminent Jedi Knights Revan and Malak traveled into the unknown regions in search of the Star Forge which lead them into contact with the Sith Emperor. He supposedly corrupted them and gave them a mission to return to the Republic and serve as a vanguard for a Sith invasion thus beginning the Jedi Civil War. Through out the Jedi Civil War Revan deliberately left key Republic infrastructure intact on many planets to assure stability so that he could take his Empire to war with the hidden faction lead by this mysterious Emperor. Revan's ultimate plan never came into fruition as Malak betrayed him and took the mantel of Dark Lord of the Sith for himself, caring little for his former master's aspirations of stability Malak sought to destroy anything that got in his way to achieve his goals. Malak was eventually hunted down and killed by his former master, who was redeemed by the Jedi Council, effectively putting an end to the potential vanguard. After Malak's death the remnant of Revan's Empire was destroyed by the Jedi Exile who shortly after her victory departed to the Unknown Regions to join Revan, who left at the end of the Jedi Civil War, on his quest against the Emperor and his "True" Sith. About 300 years later it was presumed that they failed when the "True" Sith finally returned and started the Great Galactic War and they were never seen again.

In the year 3,681 BBY the Emperor and his Empire withdrew from their seclusion on Dromund Kaas and attacked the Republic in what was considered to be the best orchestrated military strike in galactic history.

The Sith Emperor led the Sith Empire during the Great Galactic War and after its conclusion withdrew, deferring control to his Dark Council, in order to pursue his own mysterious goals. By the time of the Great War, he was well over 1,400 years old.

Behind the scenes
There are many speculations as to who the identity of this Sith Lord could be. The secret of immortality has been commented upon to have belonged to the ancient Sith, who were known to prolong and extend their lives in such a manner. IGN has reported that the Sith Emperor is Naga Sadow, but since other sites, including the official website, remain vague on the matter, the identity of the Sith Emperor remains uncertain. It should be noted that the Tales of the Jedi comic books that established Naga Sadow also established that he died at the hands of Freedon Nadd about seven hundred years before the events of the game, while later sources, such as Jedi vs. Sith: The Essential Guide to the Force, have been very vague on the subject of Naga Sadow's eventual fate.

Due to a misunderstanding in a recent interview many have taken the words of Daniel Erickson, lead writer for Star Wars: The Old Republic, to mean the Sith Emperor was indeed the Emperor during the Great Hyperspace War. He has since posted a message saying this was not his intention and that the Sith Emperor was not the Emperor during that era, and therefore not Naga Sadow.

It should also be noted that the recent Essential Atlas shows that both an unnamed Sith Lord and Naga Sadow fled Sith space in separate directions, with Naga Sadow going to Yavin as in previously established canon and the unnamed Sith Lord fleeing to the unknown regions. This same source also implies that Shar Dakhan was the last acting Dark Lord.

It was confirmed that the Emperor was not Naga Sadow by the seventh Timeline video entry at Star Wars: The Old Republic website.

Appearances

 * Timeline 1: Treaty of Coruscant
 * Timeline 4: The Empire Changes Strategy
 * Timeline 5: The Battle of Bothawui
 * Timeline 6: Onslaught of the Sith Empire
 * Star Wars: The Old Republic, Threat of Peace Act 1: Treaty of Coruscant
 * Star Wars: The Old Republic

Notes and references
Emperador Sith Imperator Sithów