T3-M4 (also called Teethree for short) was a T3-series utility droid built as a master slicer for crime lord Davik Kang. His life of crime was short-lived, however, after Taris was bombarded by the Allies and Davik was killed. The droid then wandered the planet alone until he gathered the parts necessary to repair the Ebon Hawk, and eventually the droid rescued a woman from Darth Sion, and helped her in her quest to stop the Sith Triumvirate.