Darth Vader

Obiwan Kenobi, he was injured by a Force Stigmata attack and thus went through the process of death and rebirth. Since then, he\'s totally instrumentalized by Emperor Palpatine, also known as Darth Sidious. There is no good within him, except maybe for a little, little bit.
Dark Lord of the Sith, Darth Vader is what remains of a Jedi Knight once called Anakin Skywalker, who had the higest Midichlorian count ever. Greatly damaged during the epic battle with Jedi Master