Mission to Exegol

"Supreme Leader Victor Nevarez of the Coalition of the Red Star was on a mission to find the hidden Torvivum Zuskelgar, the ruler of the Empire of Darkness, one of the two instigators of the Kids' Club War (along with the more evil Tomislav Vlahović), and maybe the sole creator of Sheev Palpatine himself, which is far more evil than the latter, like a child disobeying their parent. How can that happen?"

--Su Ji-Hoon, Congressman Andrews

Supreme Leader Victor Nevarez went on a mission to find the hidden Torvivum Zuskelgar; who was the ancient evil ruler of the Empire of Darkness, one of the two instigators of the Kids' Club War (along with Tomislav Vlahović) and possibly the sole creator of Sheev Palpatine; who is actually a clone vessel that had been modeled on the Dark Emperor's original body, after he heard his transmission that was broadcasted across the entire multiverse, deeming it a challenge to his regime.

In search of Zuskelgar, Victor traveled to Mustafar in search of a wayfinder to pinpoint the Dark Emperor's location, while being accompanied by Lord Commander Reginar Albrecht and General Vincent Turner. He killed the locals who attacked him there.

Upon arriving on Exegol, Nevarez left the Hammerhead; an Upsilon-class command shuttle, and activated his Darksaber straight away, walking into the huge Sith Citadel. Upon arriving inside, Torvivum began speaking to him. Victor walked past a tank with a body of a Palpatine clone in it. Zuskelgar revealed that he created Palpatine as a means to groom Anakin Skywalker as Darth Vader and was manipulating everything behind the scene.

When the Supreme Leader threatened Torvivum with death, the Dark Lord merely stated that he had existed for over a millenia, and that the dark side of the Force was pathway to abilities several individuals would consider to be unnatural. Zuskelgar then revealed his creation of the Immortal Armada, a massive world-annihilating armada comprised of over 1,080 starships equpped with planet-killing antimatter weapons. The purpose of this fleet was to restore Sith rule across the galaxy in the form of a new Dark Empire, which Torvivum offered to Nevarez along with the title of Dark Emperor, but only if he killed the Jedi master Alexander Pepper; the boy that sought to defeat the Coalition.

Unbeknownst to Victor, Zuskelgar secretly began to transfer his spirit into the body of the Supreme Leader, completely possessing him and thus fully replacing the latter's once honorable personality with a much more sinistrous persona.

Trivia

 * This was inspired by this: https://star-wars-canon.fandom.com/wiki/Mission_to_Exegol