The DSD1 dwarf spider droid, also known as the burrowing spider droid because it was first used to destroy opposition in narrow mine shafts, was a battle droid manufactured by the Commerce Guild to support the cause of the Confederacy of Independent Systems.
The DSD1 was similar in function to a typical combat vehicle. It was also used to punish customers who had declined to pay their taxes to the Commerce Guild.
Its main weapon was a long central blaster cannon mounted on its dome that was both capable of firing rapid-fire anti-personal rounds, or slower-rate high-intensity blasts that could destroy light vehicles. The droid's small frame and four all-terrain legs made it suitable for warfare in dangerous mines, and the adjustable legs made it capable of getting better elevation for the blaster cannon. However, because of the fixed laser cannon, it could not turn around to track enemies, thus making it inferior to speedy targets. Also, the length of this cannon sometimes hindered it in confined areas, a weakness was exploited by Anakin Skywalker on Escarte.
The droid was capable of communicating in a beeping language similar to Binary. It also seemed to have basic emotions, such as frustration, as demonstrated on Escarte and Teth.