

In 11 BBY, the Confederate Remnant made its presence known during the Battle of Serenno where it defeated Rebel Alliance and Imperial forces, as well as stealing large amounts of secret Imperial data. Possessing significant amounts of war material, warships, and droids, he formed the Confederate Remnant Navy, and began to create additional soldiers due to needed extra defense. Several months after the departure of the other Separatist leaders from Mustafar, Dellso and his entourage of Geonosian officers discovered, and then activated a hidden droid factory. Gizor Dellso, Toma, and Marath Vooro quickly emerged as the leaders of this new secessionist movement, and declared Mustafar their capital. After lengthy debates, they decided to pit their forces together against the oppression of the Galactic Empire. In 15 BBY, the most powerful of the Separatist Holdout leaders gathered on Mustafar to discuss a reformation of the Confederacy of Independent Systems. With the Stormtrooper Corps in the forefront, the Galactic Empire quickly managed to destroy or force many Separatist strongholds to surrender.

In the years following Dellso's arrival on Mustafar, the Galactic Empire began its extensive campaign to root out and destroy the remaining Separatist forces across the galaxy. Now the leader of the most powerful of the Separatist Holdouts, Dellso began to plan his invasion of the Galactic Empire. These were the beginnings of the Confederate Remnant's vast droid armies, and fleets of warships. After completing his fleet, Dellso reactivated the droid forces on Mustafar from within the control room. Not wanting to believe that the Clone Wars were over, and that the Galactic Empire had won, Dellso, who was the creator of the Separatist Droid Army signal beacon, used Mustafarian slaves to construct huge Confederacy warships. After extensively exploring the mining facility, Dellso came upon the bodies of his former leader, Poggle the Lesser, and the other leaders of the Confederacy of Independent Systems, all of whom were killed at the hands of Darth Vader. In 19 BBY, Gizor Dellso, after years of assisting the Rebel Alliance, traveled to Mustafar, the site of the bloodiest massacre during the Clone Wars. Instead, I found power beyond my wildest dreams. I arrived on Mustafar looking for my leaders.
