It is unknown how Cos Palpatine learned the Sith arts is unknown, but he studied the Sith Holocron and studied the Dark Side in the Sith Mausoleums of Korriban. But long before he became a senator, Palpatine was a master of the dark side. Using these powers, he masked his adeptivity with the Force, preventing the Jedi from discovering his evil

intentions. At the same time, he trained an apprentice, Darth Maul. When he had become the Senator of Naboo, he organized the Trade Federation to blockade the very planet Palpatine hailed from. He sent Darth Maul to track down and destroy Queen Amidala, who had escaped the blockade of Naboo. He failed and Amidala made it to Coruscant, where Cos persuaded her to spark a vote for the impeachment of Supreme Chancellor Vallorum. Palpatine was one of the nominees for his successor and was elected due to the sympathy of the rest of the senate. During the Battle of Naboo, Darth Maul was killed by Obi-Wan Kenobi. He trained a new apprentice, Darth Rage, while balancing a his new responsibilities as Supreme Chancellor. However, Dark Rage died on his first mission, killed by Jedi Master Plo Koon. After eight years, Palpatine well exceeded the legal limit to maximum years in office. But by promising to stop Count Dooku's separatist movement, he managed to stay in office. He made no attempt to do so, however, since Dooku was his newest apprentice and was acting on his behalf. Dooku's Confederacy of Independent Systems seceded from the Republic. Eventually, a group of Senators preposed the Republic create an army. When Padmé Amidala, the new Senator of Naboo was the victim of an assassination attempt, Palpatine assigned two Jedi to guard her. When a second attempt was made, Obi-Wan Kenobi was sent to discover the intended killer, while his apprentice Anakin Skywalker guarded the senator. Palpatine already knew the attacker's identity, Dooku having arranged it for him, and this was a plot to use Anakin's love for the senator to draw him closer to the dark side. When Obi-Wan discovered the clone army supposedly made for the Republic, Palpatine agreed to use emergency powers granted by Representative Jar Jar Binks to use these clones to save Kenobi, Skywalker, and Amidala, who had been sentenced to death on Geonosis. This gave him a distraction for Count Dooku's delivery of plans for a battle station with enough power to destroy an entire planet. During the Clone Wars, Palpatine was able to flourish, as he profitted from victories by the Separatists as Darth Sidious and from Republic victories as Chancellor Palpatine. Near the end of the wars, he staged capture by Count Dooku, leading Obi-Wan Kenobi and Anakin Skywalker to come rescue him. In the process, Anakin killed Count Dooku. Palpatine took Anakin as his personal bodyguard, pretending to fear another attempt on his life. During this time, he drew the Jedi Knight to the dark side of the Force. He took this pivotol moment to declare himself the Emperor and naming Anakin his apprentice in the ways of the Sith. He sent Anakin and the Clone Troopers to kill all the Jedi, Anakin striking at the very core, the Jedi Temple on Coruscant. Some Jedi survived this onslaught and tried to defeat Anakin, now the Sith Lord Darth Vader and his master. The first was Mace Windu, a member of the Jedi Council, whom Vader and Sidious killed together. Vader was then sent to exterminate Jedi elsewhere, while Cos faught Jedi Master Yoda, leaving him close to death. On the planet Mustafa, Vader lost a lightsaber duel with his former master, Obi-Wan Kenobi, resulting in serious injuries, forcing Palpatine to give him cybernetic implants and a suit of armor. The Jedi purge was continued by Imperial assassins, Palpatine's legions of white armored stormtroopers, and fleet of star fighters. Palpatine, along with his contingent of viziers, such as Sate Pestage, past all kinds of ill conceived laws, such as the High Human Culture act, which made enslavement of non-humans legal, the Emperor himself often using Wookiee labor to build his super-weapons. However, the Emperor was willing to use their talents when ever necessary, such as Mitth'raw'nuruodo, who became better known as Grand Admiral Thrawn. He also established groups of force-sensitive underlings to carry-out work too trivial for himself or Vader, such as the Emperor's Hands. When torturing one of the few remaining Jedi Masters, he learned how to transfer his spirit into other's bodies. Since his extreme corruption by the dark side had led to his body's premature decay, he established several cloning facilities across the galaxy, where he produced replicas of himself which he could transfer his essence into another body, once his current one burned out. Regardless of the Rebellion amassing against him, Palpatine believed he would rule forever. That is, until the Rebel Alliance destroyed his ultimate weapon, the Death Star in the Battle of Yavin. Cos ordered another be built and tortured its designer, Bevel Lemelisk, insuring that this one wouldn't have a similar flaw to the first one. He enjoyed watching Darth Vader fight Prince Xizor of the Black Sun organization, which didn't last for long, Vader making short work of the Falleen criminal. However, Xizor was just a sparring partner, as Palpatine decided to put him up against what he intended to be Vader's successor, his own son, Luke Skywalker. He was originally the target of an assassination attempt by Mara Jade, one of his Hands. The two were dueled on board the Death Star II, with the Emperor watching calmly. However, Luke redeemed his father. When the Emperor realized that his chance of having either as his apprentice was non existant, he turned lose his Force Lightning on Luke, nearly killing him. Anakin, now back in the light, through the dictator down into the battle station's core, incinerating his body. However, Cos's spirit lingered on, making its way to Byss, where it inhabited a healthy clone and amassed a fleet of world devastators and a contingent of Dark Side Adepts and struck at the deep core. Luke Skywalker went to stop him, but ended up joining him, hoping to destroy the Sith from the inside. Only his twin sister, Leia, was able to save him, and together they defeated him. His spirit inhabited another clone with little difficulty and threatened the galaxy with his new Galaxy Gun. However, he discovered that his supply of clones was dwindling and he set his sights on a new host, the baby, Anakin Solo. He made his last stand on the planet Onderon, but the boys father shot him, killing his current body. The Jedi Knight Empatojayos Brand bound Palpatine's soul to his own, killing himself and ensuring Cos Palpatine would never again return.