R3-T6 was an R3-series astromech droid that was made on the Death Star for fixing broken machinery. After working for many years on the Station itself, R3-T6 was chosen by an Imperial Remnant to be stationed on Korriban, homeplanet and training grounds of the Sith. Brought to Yavin IV for an important mission, R3-T6's mind was put to the test.