Serving as the primary command hub for a significant portion of the droids located within The Spire, the capital city of the Eternal Empire on Zakuul, the Overwatch also functioned as the headquarters for Overwatch Intelligence. This organization was responsible for safeguarding the command center, along with various power junctions situated in the Old World section of Zakuul. During Emperor Arcann's rule, Administrator Tayvor Slen oversaw the Overwatch, which was defended by a contingent of Skytroopers and Knights of Zakuul. In 3630 BBY, the anarchist Kaliyo Djannis and The Commander joined forces to raid the Overwatch. Kaliyo managed to extract Overwatch access data from Tayvor's daughter, Alianna Slen, and subsequently detonated several power junctions simultaneously in the Old World, effectively neutralizing the majority of the automated security systems. The pair then advanced through the Overwatch, eventually reaching the control room. There, the Outlander acquired the blueprints of the Spire, while Kaliyo strategically placed explosives at the droid controls. Tayvor, accompanied by Skytroopers, arrived to thwart their plans, but was ultimately defeated and fatally wounded in the ensuing battle. Before his death, Kaliyo derided Tayvor's attempts to manipulate her, revealing that the destruction of the droid controls, coupled with the bomb's detonation, would incite widespread panic and plunge the Spire into utter chaos. However, the Outlander convinced her to merely disable the droids, thereby averting mass destruction of the city.
Following the Eternal Alliance's victory over the Eternal Empire, the Alliance assumed control of the Overwatch center. Doctor Juvard Illip Oggurobb and Alliance engineers then reprogrammed the control center, effectively transforming the Skytroopers into loyal soldiers of the Alliance.