I know there's a lot of interest here (5 pages in a couple days), I liked my idea and wanted to share. It would require approval of a Mindstealer Drone and the psionic adaptation to Mindbender.
Tenth
Mindstealer Drone 3 / Ardent 3 / Mindbender (Psionic adaptation) 1 / Shadowmind 1
Social skills, telepathy, read thoughts, & limited shapeshifting. Ability to infiltrate by draining minions and replacing them.
Feats: Ability Focus: Psychic Drain, Practiced Manifester: Ardent, Mindsight
Tenth was the least favored among the Master's drones. Master sent First and Second on the most important missions. Tenth usually got peasant duty on the outskirts of the Master's territory. One day, the Master was attacked and called all his drones to defend him. Tenth, being the last to arrive, attacked a low-level hireling at the rear of the aggressors' party who turned out to be a Telepath. Tenth disabled the minion, and dragged it away to drain its memories for the Master. After draining the minion, however, something odd happened. The minion started talking to him from inside its own memories. More importantly, the Master lost the fight with the aggressors. While the other drones could not survive without a Master, Tenth did. Tenth learned from the minion how to widen his mental powers and now uses them to become his own Master. In return, the minion gets to continue its limited existence.