Darth Plagueis is one of the main characters of JMan2.0's take on a Star Wars Sequel Trilogy. Though he was thought to be dead, he is revealed to in fact still be around and acts as the main antagonist of the trilogy. This is still a work in progress, so if you care about spoilers for this kind of thing than don't read further.
Biography[]
Pre-Sequel Trilogy[]
Darth Plagueis was the Sith mentor to the future Emperor Palpatine, Darth Sidious. He would come to be legendary for how he discovered how to cheat natural death and in theory live forever. In spite of Sidious' talents Plagueis felt he could create an apprentice who was even more powerful, and branched that project off of his experiments in Midichlorian manipulation. He eventually managed to impregnate a young woman named Shmi with these methods, giving her the child that would come to be named Anakin Skywalker. He believed that his student starting out with the harsh life of a slave would make him more suceptible to the allure of the Dark Side through having a stronger craving for power and a greater bitterness towards the world. He thought that his calculation was flawless, and that the boy's fall would be a sure thing.
Sidious however put things together in his mind, and realized that the baby was Plagueis' intended replacement for him. So one night while Plagueis was asleep, Sidious attacked his master with a brutal attack of Force Lightning until he was dead. Though Sidious would go on to create grand plans of his own, eventually managing to overthrow the Galactic Republic itself as an enemy from within, he always had a lingering fear that his "immortal" master was somehow still out there and would come back for retribution. Palpatine would eventually sensed that Anakin was Plagueis' intended replacement for him after the liberation of Naboo from the Trade Fedeartion, and decided that he would eventually take Anakin as an apprentice for himself. To not only play dramatic irony and spite against his mentor but because he believed that like how Plagueis had intended, Anakin could potentially be the most powerful servant he could ever find. With his genetic design even giving him some kind of a disposition towards the Dark Side. However neither Sidious or Plagueis counted on the love and care from is mother instilling a powerful sense of good in him in spite of living a slave's hard life that would help him eventually relent from the dark path.
Though his body was destroyed Darth Plagueis had actually still remained within the world of the living as a spectral wraith. Not truly alive or dead. Though he had the ability to interact with the living. And this new form did provide him with the advantage of immeasurable travel throughout the universe. His experimental mind relishing the vast amounts of the universe he could see. He eventually came across a well populated region of space that had no real knowledge of the Force beyond vague notions. He taught them in its ways, and thus managed to create a huge following. One that expanded over the decades into a vast Sith Empire that engulfed that entire Galaxy. Spearheaded by his first ardent follower Jode Sandage. A baron who sought even greater power and became the head of state with Plaguies as his mentor and advisor.
In the wake of this Empire, a new social order was created. A feudal caste system where those with the ability to wield the Force were put above those who did not have the same potential. In exchange for the services of the surf-level civilians, they were promised "protection" from the Sith Lords ruling over them. Though it was breaking the established "Rule of Two", Plagueis did have further plans in mind that would lead to betrayal and taking the power of all these other Sith Lords being created for himself when the time came with an ancient device known as the Bogan that he had learned about in his years of study. Planning on making himself the most powerful being who ever existed, to the point that he theorized that he could shape the universe to his desired image.
Eventually all those with Force potential that did not swear their allegiance to Plagueis' regime were sentenced to fight to the death in arena battles for the amusement of the people. Violent spectacles to distract the people from the big problems at work in their society. Similar to the technology used on slaves in the Galaxy Plagueis originated from were developed, and thus tracker implants were put into the fighters' bodies that could be detonated if they fell out of line or tried tampering with the devices.
After the new regime was well in place Plagueis turned his attention to attaining a powerful corporeal form once again. Being left in a very weak form that could hardly interact with the plane of the living ever since his "death". Baron Sandage helped him in these efforts, in exchange for Plagueis teaching him the way to the path of immortality. They eventually discovered a method where a spirit could posses a living body as a vessel in the place of the body's original consciousness as long as they had embraced the Dark Side. Plagueis attempted it on one of the powerful Sith under his command. Soon after he took it over however, his body ultimately rejected and dispelled Plagueis' spirit and died. Plagueis realized that the method could work, but it had to be in a body that would accept his spirit. He thought about creating a new body with his Midichlorian Manipulation techniques only to find out that in his current state he was too weak to be able to pull them off. It was then he decided to turn his sights toward the past. Knowing that right before his death he had indeed created something that could have acted as his vessel. The child he had impregnated into Shmi Skywalker.
Returning to his original Galaxy, he saw his former apprentice's Empire. Having completed the mission their order had been attempting to achieve for so long. He managed to use sensory powers through the Force to located his original creation. Simultaneously though he managed to sense Anakin's son Luke. Luke unlike Anakin was in perfect physical shape and in his prime. Not a disadvantaged cyborg like his father. Because it was through his own power that Anakin was created, his mystical essence flowed through the veins of the Skywalker family. Meaning that they were bodies that his spirit could inhabit. He watched over Luke for a time and began to try and hone the Dark Side around him to try and consume his mind, while his father Vader and Sidious were still attempting to pull Luke to the Dark Side. Luke came his closest to turning to the Dark Side during his duel with Darth Vader on the Death Star II during the Battle of Endor. Luke resisted giving in, but when Vader threatened his sister he became enraged and unleashed a great amount of Fury that led to him chopping off one of Vader's robotic hands and knocking him to the floor. He struggled between whether or not he would kill his father but ultimately reisted the urge to give in, and declared himself a Jedi to Palpatine. His refusal of the Dark Side made Luke unable to become his vessel and thus returned to his Empire. However he left with the knowledge of Luke's having a sister and learned she had a lover, and thus he knew he would have another chance soon enough.
The Reborn Order[]
Darth Plagueis only appears very limitedly in the first installment of the trilogy. But the fruits of his planning are seen throughout. He sent one of his students, a shapeshifter known as Darth Crux, to infiltrate the military command of the Imperial Directorate. The Directorate being a political power that controls much of the traditional "Star Wars" Galaxy that was made of the remnants of the Galactic Empire that was created by Plagueis' treacherous student. When the idea of peace talks arises between the new Galactic Republic and the Imperial Directorate, Plagueis becomes determined to not only stop them, but also to re-ignite a full-scale war between the two powers and thus end the armistice the two had had for several years.
Crux executes the plan and ends up having a lightsaber duel against Jedi Master Luke Skywalker and his Padawan Learner/Nephew Bail Solo. He manages to slay Luke and has an opportunity to kill Bail, but Plagueis telepathically orders him to leave Bail unharmed since he has his own plans for him. Crux then tried to flee, but Bail managed to grab his lightsaber and launch it at his foe. Impaling him and sending him down a shaft, apparently to his death.
Unknowingly to them, during this time he tested both Owen Skywalker and Bail Solo to figure out which of them he would be more likely able to turn to the Dark Side and act as his vessel, since both have Skywalker blood in them, and finds the greater potential in that of Bail. The night before Bail's Jedi Knighting ceremony Plagueis comes before him with the offer of the power to help him defeat the Imperial Directorate and the Sith whom they Jedi and Republic are convinced are alligned with the Remnants of the Galatctic Empire, akin to the fact that it was the Sith Lord Sidious that created it. He also revealed that Darth Crux survived their duel and was still among the ranks of the Imperial Directorate. Bail feels guilty for the death of his uncle, believing that he could have been able to save him. But he also panicked in that he was afraid that if the Jedi discovered he had not actually slain the Sith Lord that they would come to deem him unworthy as that was the deed that he though earned him the rank of Knight, but also felt the need to prove his worth to himself on top of that. All of this putting him on an obsessive quest to hunt down his murderer Darth Crux.
He always wanted to be the best and consistently improve himself, but the murder of his uncle only furthered his resolve to get greater power. Both for his own more selfish desires as well as to protect his family. Plagueis approached him in a disguised form through his powers with the force. That of the well-known, venerated deceased Jedi Master Mace Windu. This happening the night before his Jedi Knighting ceremony, telling him that he could help him. He appealed to Bail's staunch attempted loyalty to the Jedi traditions and "criticized" Luke's order for ignoring precepts of the past. As well as the fact that his mother did not accept her "responsibility". When Bail questioned his reappearance he asserted that with the revelation of the Sith still being around, he felt he had to come and do what he can to try and eliminate the Sith once and for all. Bail decided to accept his teachings. Because of him appealing to his beliefs/sensibilities as well as his trust in a Jedi Master. Plagueis in this form convinced Bail that he could become the ideal image of the Jedi, and perhaps even the grand master one day after he proved himself.
Rise of the Dark Side[]
Plagueis, still in disguise as Windu, became a secret new mentor for Bail. Teaching him new techniques, including the form of combat known as Vaapad. A form of combat that only Windu was known to have mastered without completely falling to the Dark Side. Something that Plagueis was counting on. That among other teachings/techniques that were "under the radar" preparing him for the Dark Side. Bail began to feel this, but he was re-assured that he had "faith" in his ability to master it. And convinced him that in certain doses a true Jedi could skirt the edge of the Dark Side, and tame it if strong enough. Convincing him that that was a part about how he learned how to appear from beyond the netherworld of the Force. With a different method than the one discovered by Qui-Gon Jinn. With his help Bail was also becoming a successful war hero in the battle against the Imperial Directorate.