The Dark Council are a group of twelve Sith lords that rule over a vast spread of solar systems in the galaxy after the destruction of its original empire during a war against the Republic. They are the main antagonists of Star Wars: The Old Republic and play a major role in Video Game Villains War.
Darth Sidious (Leader of the faction that allied with The Gems,was sent into another dimension)
Dark Laser (The apprentice of Darth Sidious who was tasked to obtain informations from Gravitina,failed his mission as Gravitina escaped being humiliated in front of Count Dooku,was eventually destroyed alongside The Death Star during The Final Battle)
Count Dooku (Another apprentice of Darth Sidious that usually rivals Dark Laser skills,was sent into another dimension)
General Grievous (Former general of Palpatine,was crushed by Lord Dominator until he was rebuilt by Sidious,was sent into another dimension)
Asajj Ventress (Assasin hired by Sidious to kill one of Zurg's allies,falled into her death)
Darth Sidious (Former apprentice of Tor Valum, it is speculated that he was a member of the shadow council that would formerly be the Galactic Empire until Hordak and Catra throw him off a cliff to his death.)
Darth Malgus (Member of the council, He takes over as Tor Valum's second-in-command and right-hand man.)
Darth Ize (as Vrak) (A prince of the Armada who became a Sith in the service of Tor Valum)
Darth Specter (as Imperiex) (A mysterious traveler from another dimension who does not know his intentions, became a Sith in the service of Tor Valum.)
Rebirth Cell (A Bio Android with the genes of different warriors from the Universe created by Vrak to serve the Council)
Atrocitus (Leader of the Red Lantern Corps, he is a warrior who serves the causes of the council)
Darth Yantus (as Kang) (A member of the council entered to be a Sith, it is not known how he came to earth and who closed him in the obelisk in a museum, yet he is free to remain active in the council.)