The Star Dreadnought Command Prototype represents an experimental version of an Executor-class Star Dreadnought. The Imperial Navy utilized this prototype during the Imperial Era. On one occasion, several Imperial II-class Star Destroyers provided an escort for the Star Dreadnought as it traversed through space. Notably, it incorporated sublight engines as part of its design.
This prototype, the Star Dreadnought Command Prototype, appeared as a card bearing the same designation within the Super Star Destroyer Expansion Pack released in 2019 for Star Wars: Armada, a miniatures game developed by Fantasy Flight Games. The visual representation of the Star Dreadnought Command Prototype is derived from an altered image that was initially produced for The Essential Atlas, a Star Wars Legends reference book from 2009. In that book, the image served to illustrate the Executor class vessel known as the Reaper.