In 3951 BBY, T3-M4 infiltrated the warehouse to bring one of Vogga's freighter transponder codes to find his master, Meetra Surik, and T3 was assigned to "assist" C6. When T3 discovered the hostility between the two protocol droids, he offered a way for C6 to regain his old position if he would then grant him access to the secured areas. C6-E3 agreed, and when T3 destroyed the C7 unit, C6 took over his old position. Unfortunately, his accomplishment would be short-lived, as soon afterwards a trio of HK-50 assassin droids infiltrated the warehouse, and destroyed him in a hail of blaster fire as they pursued the rogue T3.