Xyston-class Star Destroyer

The Xyston-class Star Destroyer, also known as the Xyston-class Destroyer, the Final Order Star Destroyer, the Sith Star Destroyer, Sith Destroyer, or simply the "planet destroyer," was a model of Star Destroyer exclusively used by the Sith Eternal's fleet, the Final Order. Manufactured by Kuat-Entralla Engineering and essentially derived from the traditional Imperial-class Star Destroyer, the Xyston-class was one of a kind due to its axial superlaser capable of annihilating any world or ship. The Sith Star Destroyer represented the culmination of the Dark Lord of the Sith Darth Sidious' vision of a galaxy forced into submission by sheer military might and intimidation.

Patiently built in utmost secrecy on Exegol at Sidious' behest during and well after the Galactic Civil War, the Xyston-class Star Destroyer would prove to be the most powerful ship ever made in the galactic history, as a single destroyer would pose a deadly threat to virtually any world or vessel. Although the Xyston-class Star Destroyer successfully raided and obliterated the planet Kijimi, it would not see action until the climactic Battle of Exegol in 35 ABY, where the 1,080 Sith Star Destroyers faced overwhelming odds.