The Final Order is one of the factions in LEGO Dimensions 2: The Rise of Enoch, from the Star Wars franchise.
The Final Order, also known as the Sith Eternal fleet, the Sith fleet, or the Sith armada, or the Sith Empire, was a massive fleet of Xyston-class Star Destroyers secretly constructed by Sith cultists led by the Sith Lord Darth Sidious on the planet Exegol. Alongside an army of Sith troopers, the Final Order was the culmination of an agenda over a thousand years and a conspiracy decades in the making. With each Star Destroyer armed with an axial superlaser capable of destroying entire worlds, the Final Order's objective was to bring the galaxy under the perpetual reign of a new Sith Empire through military force.
As the Resistance fought against the First Order, a successor to the Galactic Empire in all but name, adherents to the Sith religion, the Sith Eternal, labored to create the largest armada in galactic history. The Final Order's existence was revealed to Supreme Leader Kylo Ren by the reborn Dark Lord Darth Sidious, who urged Darth Vader's heir to take the fleet and rule all the galaxy as the new Emperor.
Although Ren renounced the dark side of the Force, Sidious' plans continued apace with the support of Allegiant General Enric Pryde. The Derriphan, one of the many Star Destroyers comprising the Final Order, demonstrated its power to the galaxy by destroying the planet Kijimi. In order to prevent Sidious from realizing his goal of establishing a new Sith Empire, the Resistance fleet deployed to the Unknown Regions in a last-ditch effort to prevent the launching of the Final Order.
Ultimately, the Battle of Exegol was a decisive defeat for Sidious and his followers, with the Final Order utterly destroyed by the Resistance and a citizens' fleet. As a result, the First Order military was openly attacked by an uprising of people on numerous worlds across the galaxy, from Bespin, Jakku, and Endor, to Naboo, Corellia, and Coruscant.