Luke Skywalker (Episode VI), Darth Vader
Defeat the Emperor
Eliminate the Imperial Guard, then use the Force on the two large structures hanging above the Emperor 11. Each can be used once before the Emperor rips them out and sends them across the room, where they become Multi-Build bricks 12.
Choose right to make an X-wing, which Luke Skywalker can guide with the Force. Choose left to build a TIE fighter, which Darth Vader can hurl at the Emperor with the power of the Dark Side. Each attack can be used once. The Emperor destroys rebuilt mini-starfighters with Force Lightning.
The Emperor moves the fight down a flight of stairs 13. He shields himself in Force Lightning, summons additional Imperial Guardsmen, and hurls assembled debris at the Skywalkers.
There are two ways to damage the Emperor here. The first is to throw a lightsaber at the targets high above the Emperor, which spills a pile of junk on him.
The second way is to use the Force to pull objects from the walls on either side of the staircase. Hold the cylinders with the Force until they slam into the Emperor.
The final stage pits Darth Vader against the Emperor. Tap the button that appears to advance Darth Vader, and end the fight with a mighty heave.