Sheev Palpatine

Sheev Palpatine, also known as Senator Palpatine, Chancellor Palpatine, Emperor Palpatine, and Darth Sidious, is one of the playable characters in LEGO Star Wars: The Skywalker Saga. He is the main antagonist of the Skywalker Saga.

Background
The dark side of the Force is a pathway to many abilities some consider to be unnatural, and Sheev Palpatine is arguably the most infamous follower of these Sith doctrines. Scheming, powerful, and evil to the core, Darth Sidious restored the Sith and destroyed the Jedi Order. Living a double life, Sidious was in fact Palpatine, a Naboo Senator and phantom menace. He slowly manipulated the political system of the Galactic Republic until he was named Supreme Chancellor -- and eventually Emperor -- ruling the galaxy through fear and tyranny. The galaxy rejoiced when he died at the Battle of Endor, but Sidious had cheated death and patiently plotted a return to power.

Trivia

 * In the films, Palpatine was portrayed by Ian McDiarmid.
 * In the computer-animated film, Star Wars: The Clone Wars, he was voiced by Ian Abercrombie.