Ben skywalker 

You (Ben skywalker) have fallen to the Dark side of the force and for you to finally become a Sith lord you must destroy a Jedi artefact so you do just that by throwing it off a platform in a old separatist droid factory on Tatooine into lava along with your lightsabre for an Inquisitor lightsabre and then Luke skywalker and Mara Jade arrive.