The Annihilator-class Star Destroyer was the primary starship of the Octom Coalition. Originally based off of designs of the old Imperial-class Star Destroyer used by the Empire of Darth Sidious, the Annihilator-class Star Destroyers were so heavily modified that they warranted their own classing. The Octom Coalition possessed an unknown number of these vessels during the Octom War of 160–161 ABY.