Calibretto:

"Hmmzzt... yes this is true, however my story is far more tragic. My brethren and i were created to be great engines of war. Our task -- to eradicate the threat of invasion by an army of powerful marauders. Soon after our victory, the very people we were built to protect, began to fear our vast destructive capabilities. We were hunted down, destroyed on sight. Every last one of us, driven to extinction. If not for Knolan's kindness in offering me shelter, I too would have been perished. In the many years following that senseless war, I have learned one important lesson, meaningless destruction is a waste of precious life. One must replace what one has destroyed. This is the code I now live by."