A once benevolent politician who showed his "true face" when he betrayed the Jedi, seduced Anakin Skywalker and reformed the Republic into the Galactic Empire.
Formerly a politician from the planet Naboo, Palpatine was secretly one of the Galaxy's only surviving members of the long thought extinct Sith Order. As a member of the Sith Palpatine, or Darth Sidious as was his Sith name, studied and practiced the dark side of the Force. Before seducing the once great Jedi, Anakin Skywalker, Palpatine's apprentices of the Dark Side included the horned head, tatooed Darth Maul and later following his death at the hands of Obi-Wan Kenobi, the former Jedi elder Count Dooku who was given the Sith alias of Darth Tyranus.
Palaptines greatest victory came through his tempting of Anakin Skywalker with promises of power enough to stop the ones he loved from dying. This lure of power corrupted the soul of young Skywalker and led him to being reborn as the Palpatines deadliest instrument of destruction, Darth Vader.
However, before the events that took place following the death of General Grievous on Utapau, one other person had gotten a glimpse into the "true face" of Palpatine. That person was none other than Boba Fett who had come to Coruscant to exact his revenge on Mace Windu for killing his father Jango on Geonosis. To Boba's surprise he learned that Palpatine had actually known of Boba's true reasons for coming to Coruscant and had done nothing to prevent it. Boba also got the impression that both him and Palpatine shared something in common with disliking Jedi. Palpatine then allowed Boba to leave the planet while keeping what knowledge had been exchanged between them in his office to himself. To help "convince" Boba of this confidentiality Palpatine presented Boba with a cube worth enough credits that Boba would be able to take whatever bounties he wanted to from that day forward.