General Grievous
In "Revenge of the Sith", the Confederacy of Independent Systems (Separatists) used the "Providence"-class carrier/destroyer as their frontline capital ship at the Battle of Coruscant, opposite to the Old Republic Navy's "Venator"-class Star Destroyers. A modified variant, the "Invisible Hand", serves as the command ship for Count Dooku and General Grievous. Expanded Universe material states that the "Providence" destroyers were constructed on the planet of Mon Cala, at the same shipyards that would later produce the Mon Calamari cruisers for the Rebel Alliance.