Okay, short, seriously rushed backstory for the Purge Leader (though much of his existence is meant to be unknown until revealed in the RP), it should do for now, much revision WILL occur in the future, until then, enjoy!
"But in you...I see the potential to see the Force die, to turn away from its will..."
"You are beautiful to me, exile. A dead spot in the Force, an emptiness in which its will might be denied."
"But no Jedi ever made the choice you did. To sever ties so completely, so utterly, that it leaves a wound in the Force..."
"I would have killed the galaxy to preserve you...You are more precious than you know..."-now...it's verbatim!-A quote from Darth Traya (Kreia)