Imperial torture droid

The Torture droid is a floating orb with protruding apendages. These apendages are probes, needles are other nice gadgets for making rebels tell their story. The needles dispence truth serum. A shock apendage and numerus knives and other torture devices bring the subject to their pain thresehold and over but build in safety mechanisms mean the life form will not die, however these features can be removed.

Princess Leia suffered at the hands of one of these droids when captured from the Tantive IV. She managed to surive and not tell the droid anything, quite an achivement.