AC series droids had a reputation for being the best third-degree droids in the market and the most confident, competent and friendly.
AC-series pilot droids were humanoid in shape, versus the three-armed, cylinder-bodied RX-Series—another brand of pilot droids used by Star Tours. The AC head was helmet-shaped and flattened on the front side, with a round speaker and a pair of yellow photoreceptors. They were equipped with a breakthrough Intellidor 8 droid brain, advanced articulations, a set of and a disc-shaped power recharge socket on the torso.