Darth Revan and Darth Vader are both powerful Sith ... with Anakin Skywalker as a general leading a squadron of clones into battle. They both would come to be the reasons their respective wars ...

Trained initially as a Jedi over 3,000 years before the Battle of Yavin ... Alek -- now known as Darth Malak -- betrays Revan. His memory is wiped by the Jedi and he becomes a Republic agent ...