Darth Sidious

Darth Sidious is a fictional character in the Star Wars universe.

Warning: Plot details follow.

A Sith lord, Darth Sidious was the prime practitioner of "The Dark Side of the Force". In The Phantom Menace, Sidious sent out his apprentice Darth Maul to kill Queen Padme Amidala and the Jedi knights Qui-Gon Jinn and Obi-Wan Kenobi.

In Attack of the Clones, Sidious again plotted against the Jedi, this time sending his new apprentice Count Dooku, a.k.a Darth Tyranus to do his work.

Later, supposedly in Star Wars Episode 3, it is generally assumed by fans that Sidious will be revealed to be actually Supreme Chancellor Palpatine, and take on Anakin Skywalker as his new apprentice under the name Darth Vader. If so, then between Episode III and Episode IV, Darth Sidious will become the Emperor who is seen in Episodes V and VI.

There are clear clues to this fact earlier, for example in the closing scenes of The Phantom Menace, Palpatine is shown in profile, matching Sidious seen in the same position but with his face hidden by the hood of his cloak. Both Darth Sidious and Palpatine are also played by the same actor, Ian McDiarmid.

In the original movie trilogy, the name Palpatine is never spoken and he is referred to only as "The Emperor". The name Palpatine originated in the novelizations, in which the name is given as that of the former senator who rose to power.

"Sidious" is two letters away from being "insidious," a word which describes Darth Sidious very well.