Imperial Core

The Imperial Core was the name of a remnant that was formed from the Galactic Empire and had remained active within the Core and Inner Rim regions of the galaxy that saw the Imperial Navy within the regions confined to predetermined boundaries set by the New Republic. It was one of several remnants of the Galactic Empire that formed in the waning months of the First Galactic Civil War, existing alongside the domain of Governor Ubrik Adelhard in the Anoat Sector, the Imperial Fleet in the Queluhan Nebula, and Counselor to the Empire Gallius Rax's faction on Jakku.

Within a year of Emperor Sheev Palpatine's death in 4 ABY, the forces of the New Republic defeated the Imperial Military at the Battle of Jakku. As a result, the Empire capitulated to the Republic and agreed to the terms of the peace treaty—the Galactic Concordance—that ended the Galactic Civil War in 5 ABY. While some remnants continued to remain defiant, those that served within the Imperial Core complied with the conditions of the treaty by keeping the Imperial Navy's vessels contained within the Empire's new boundaries. The Galactic Empire has also surrendered Coruscant to the Republic, which allowed an independent provisional government to administrate the former Imperial capital.

Despite the remnant's compliance with the Republic in the postwar era, certain elements of the Old Empire rejected the terms of the Galactic Concordance. While the Imperial Core continued to support the peace, the other remnants fled into the Unknown Regions, joining an exodus of Imperial officers, nobles, and technologists that ultimately resulted in the formation of the First Order. A cold war ensued between the Republic and the First Order; while the Galactic Senate dismissed the Old Empire's successor as a minor threat, the First Order initiated an extensive rearmament program in defiance of the treaty, fully intending to reclaim the Imperial legacy through the eventual destruction of the Republic.

Years before the Second Galactic Civil War erupted, the Imperial Core was transformed into the Fel Empire under the leadership of Jagged Fel. With the First Order posing a threat to the galaxy, the Emperor led the Fel Empire to engage the First Order for the destruction of the Hosnian System.