The fleet included various types of starships, including TIE/LN starfighters and GAT-12 Skipray Blastboats, as well as capital ships such as several Imperial-class Star Destroyers, at least one Secutor-class Star Destroyer, at least one Procursator-class Star Destroyer, at least two Vengeance-class dreadnoughts and at least one Bellator-class dreadnought. The elite TIE Fighter unit Dark Squadron was also attached to the fleet. The Star Dreadnought Eclipse II was attached to the fleet as well.
During the early years of the Galactic Empire, the fleet helped to guard the Super Star Destroyer prototype, which was under construction above Byss. The fleet fought against an Alderaanian Resistance fleet during the Battle of Byss, when the Resistance attempted to destroy the prototype.
- Dark Empire 2: Devastator of Worlds (First appearance)
- Dark Empire 4: Confrontation on the Smugglers' Moon