Lucifer
But it was given to you to watch over because you have far more in common with those... creatures. You controlled that realm and I dealt with this one. It was a system that worked.
Don't you dare bring up Eden. You ruined Eden and you know it. You were never supposed to enter, and they were never supposed to be tempted. Free Will was going to work... until it met you. Perhaps I should have anticipated that, but you did ruin it.
You may not be one of mine any more, Lucifer, but you'll remember: I brought you into this world and I can always take you back out. Just keep word of your decision to quit to yourself and stop being so horridly nice to the people who should fear you.