The Mandator II-class was a powerful vessel. While Star Destroyers like the Venator-class could stand up to a handful of Separatist Recusant-class light destroyers, a Star Dreadnought like the Mandator II-class could withstand an assault of up to 1,000 of these warships. As such, the vessel carried reactor equipment large enough to force the length of its hull up to its length of 8 kilometers.
Having cut its ties to the Techno Union prior to the Clone Wars, Kuat Drive Yards began building starships for Republic use only. Among its new designs was the Mandator II-class, an upgrade of the prewar Mandator-class Star Dreadnaught, which had formed part of the Kuat sector's defenses in peace-time. These heavy vessels formed part of Supreme Chancellor Palpatine's newly centralized Republic Navy during the Clone Wars, along with KDY's other heavily armed, wedge-shaped warship designs.
The class was far larger and more heavily armed than the Venator-class Star Destroyer and was produced in fewer numbers than this common Jedi cruiser. The various KDY warships were collectively praised for the Republic's victories during the war, while the Jedi Generals' leadership was downplayed. The Mandator II-class design was later surpassed by heavy warships made during the reign of the Galactic Empire.