Palpatine (Andauril / AU)

Darth Sidious, also known as Palpatine or the Emporer, was born on Naboo in 82 BBY and trained from his own Sith master, Darth Plagueis to be a Sith lord. He murdered his master while he was sleeping and later founded the Galactic Empire after he had fooled both the Jedi Order and the Galactic Reblublic about his true identity as the Sith master the Jedi Order was looking for.

He had four Sith apprentices: Darth Maul was his first, but he was killed by Obi-Wan Kenobi in duel. His second apprentice Count Dooku was killed by Anakin Skywalker, who should later become Darth Vader and Darth Sidious' third apprentice. But after he had lost Anakin back to the Light side, he chooses Darth Bale as his fourth apprentice. She was also his last one, because he was killed three years after choosing her as his apprentice by Anakin Skywalker, who fall to the dark side again while battling his nemesis Darth Bale.