B-9D7
this thin, humanoid droid was working for Movo Brattakin in the years prior to the Battle of Yavin. He passed himself off to C-3PO and R2-D2 as Brattakin's personal assistant, but he was much more than that. When Brattakin was killed, he put his own brain inside B-9D7's cranial cavity, effectively continuing his reign over various underworld elements while remaining a mystery long after his death. In this way, he manipulated Jace Forno and Olag Greck until B-9D7 was ultimately destroyed by Forno on Boonda the Hutt's moon.