[Source] TJ-912 was a T-series tactical droid that was used by the Confederacy of Independent Systems during the Clone Wars. She served under Count Dooku's apprentice and assassin, Asajj Ventress, and commanded the forces of the Separatists during the Battle of Sullust against Generals Obi-Wan Kenobi and Anakin Skywalker. As the battle went on, she was tasked by the Count with eliminating Ventress, as ordered to Dooku by Darth Sidious. The tactical droid did all she could to see that this was accomplished before it seemed that she had succeeded and was ordered to retreat from the battle.