Sadow was a Human-Sith hybrid who rose to power during waning years of the Sith Golden age, around 5000 BBY. A powerful force user, he was able to create illusions on distant planets as well as control solar activities; a power that allowed him to destroy entire stars. Sadow's reign began with the death of Marka Ragnos, the previous Dark Lord of the Sith. After defeating his primary rival Ludo Kressh in a prolonged power struggle, Naga Sadow donned the mantle of the Dark Lord of the Sith and started the Great Hyperspace War.
During his war with the Galactic Republic, Sadow used his unique powers to create illusions of ships while in meditation. These false ships confused and overwhelmed the opposing fleet, nearly allowing him to destroy every fleet in his path. However galactic conquest was not meant to be, and Naga Sadow was ultimately betrayed and forced into hiding on Yavin 4. He died on Yavin and his spirit was destroyed by Freedon Nadd nearly 600 years later.
The current Star Wars lore maintains that few artifacts remain intact regarding Naga Sadow. He used an actual physical sword which was discovered in his pseudo tomb on Korriban by Darth Revan. The only other remaining objects are a book he wrote found by Darth Bane and a holocron discovered by Sidious.
When going through the many images released over the past couple months we felt drawn to the image above. The picture appears to contain a "force ghost" that bears a striking resemblance to Naga Sadow. The tentacles on the character's face do share characteristics with Sadow's profile, and this similarity inspired us to examine the possibility that it is Sadow's spirit. However, as we stated above, Freedon Nadd destroyed his spirit, and we were unable to find any examples of force users with multiple spirits, so we can almost rule out that we are looking at Naga Sadow's actual force ghost. But if we are not looking at the ghostly visage of Naga Sadow, then what are we seeing in this concept art?
One possibility is that we are simply looking at the force ghost of a different Sith-Human hybrid. Many of people of this cross-species shared features with Sadow and it would not be uncommon for additional hybrids to be force sensitive and therefore able to become force ghosts. If we speculate that we are looking at a second example of a Sith-Human then it is possible such beings could be encountered by Sith players in The Old Republic. While this would be a sufficient answer, we shouldn't rule out Naga Sadow entirely.
Powerful Sith are known for creating artifacts and relics of incredible strength and durability. From Jedi and Sith holocrons to dark force amulets and gems, these items contain knowledge and power that is sought by people across the galaxy. This precedence forces us to consider that this picture does indeed contain Naga Sadow, however it is simply a hologram or residual image linked to an item. It is very unlikely that Naga is directly connected to Dromund Kaas due to the fact that it was rediscovered after his death, and a small, portable object would justify Sadow's image in this picture.
With such an interesting and important roll in the ancient history of the Star Wars Universe, it would be wonderful fan service for Naga Sadow to be included in The Old Republic. Unfortunately only time will tell if players will be encountering the remains or trinkets of this once great force user. Either way, Naga Sadow is a wonderful representative of the smart, conniving Sith we can't wait to encounter in TOR.