The BD-unit Backpack Droid is a small bipedal droid designed to assist with research and exploration in remote and dangerous locations. It has a flat rectangular head with two photoreceptors, a small body, and two legs with clampable feet, allowing it to climb a person's body or other surfaces and traverse many different kinds of terrain . It is equipped with various tools; including a holocam and holoprojector, computer link, and a spotlight.