OG-9 homing spider droid

A menacing, tank-like, and gigantic walker utilized by the Commerce Guild and the Confederacy of Independent Systems, the OG-9 homing spider droid was the heavy tank variety of spider droid, while the DSD1 dwarf spider droid was an antipersonnel variety. Both were manufactured by Baktoid Armor Workshop, and the homing spider droid consisted of a spherical body suspended between four mechanical legs. A powerful reactor was at the heart of the central body, and this center armored reactor core also contained a red photoreceptor optical array and two comlink antennae.

The OG-9 homing spider droid, or referred to simply as the spider droid, moved slowly on its long mechanical legs. The legs contained heavy-duty joints, were armored to hide the inner hydraulics, and could straighten to raise the core. On the bottom of each leg was an all-terrain footpad, and at the top were the leg-piston drivers.

This battle droid also contained long legs that maintained an imposing mix of speed and destructive power; the droid was armed with dish-shaped laser cannons in the form of a top-mounted long-range laser emplacement for attack. This laser cannon targeted for deflector shields to release sustained-fire shots to quickly wear down a shield. The homing spider droid also possessed a bottom-mounted, short-range laser cannon for defense against ground attacks. This rotating laser targeted infantry to keep them at bay.

Before the Clone Wars, the Commerce Guild, which comprised several notable corporations in the galaxy, used the OG-9 homing spider droid for contract enforcement and against its adversaries such as delinquent creditors. However, shortly before the start of the Clone Wars, the Commerce Guild joined the Confederacy of Independent Systems, and the homing spider droid became a part of their Droid Army, which also included the battle droids of groups like the Guild, Trade Federation, and Techno Union.

Not long after the Commerce Guild joined the Separatists, the first battle of the Clone Wars, the First Battle of Geonosis, began. 7,500 homing spider droids were used to devastating effect by Separatist forces. During the battle, the tank-like spider droids of the Separatists brought up the rear of the droid forces when combating ground forces of the Grand Army of the Republic. Homing spider droids attacked All Terrain Tactical Enforcers and clone trooper formations on the battlefield, but the droid forces would ultimately retreat, and the Battle of Geonosis proved to be a Republic victory.

The homing spider droids were used throughout the Clone Wars. At one point, a large number of B1-series battle droids, which were the main infantry soldiers of the Separatists, and at least three homing spider droids were all located together near dark mountains. During the Battle of Mimban, homing spider droids were among Separatist forces fighting against the Republic. During the fighting, spider droids and other battle droids engaged the Republic's 501st Legion and the Mud Jumpers. Clone Captain "Rex" ordered the 501st to advance and for the Mud Jumpers to back up Jedi General Laan Tik. While Tik instead believed they could take care of themself, the Jedi was struck and killed, making the chain of command fall to Junior Representative Jar Jar Binks, who had been brought to interface with the local Mimbanese. Binks was at Tik's corpse, telling the body that Tik had been bombad, as a homing spider droid fired nearby. Rex ordered for a retreat from the current battle.

In 19 BBY, several homing spider droids were fielded on Felucia alongside Armored Assault Tanks during a battle against the forces of Jedi General Aayla Secura. However, the droid forces of the Separatists would be shut down not long after.

The OG-9 homing spider droid first appeared in Star Wars: Episode II Attack of the Clones. In post-production of that film, the droid was simply referred to as "Commerce Guild droid B."

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