Emperor Palpatine The leader of the Empire and a dark side side Jedi that almost kills Luke. There were many clones of him made that appeared in the books but luke defeated them all he fought.
	Darth Vader Lord of the Sith a.k.a. Anakin Skywalker He is Luke and Leia's father and the Emperor's right hand man.
	Admiral Ozzel Was killed by Darth Vader using his "Force Choke" for losing the Millenium Falcon in the asteroid field.
	Jer Jerrod I don't know much about him but he was the first one to speak in ROTJ and was suprised and somewhat frightened that the Emperor was coming to the Deathstar to check up on progress.
	Grand Moff Tarkin Leader of the first Deathstar project. He was killed when it exploded.
	Scout Trooper The Imperial troops that patrolled the forest moon of Endor
	Snow Troopers The Imperial troops that stormed Echo Base on Hoth
	TIE Pilot Imerial troops that flew TIE Fighters and other types of TIE craft
	Storm Trooper The main type of Imperial troops that are used for just about anything