Michael again here. I have decided to bring back Walter O'Dim back for another trip around the tower. Walter from Stephen King's universe and is known by many names depending where in the multiverse he is. He is perhaps best known As Walter O'Dim AKA The Man in Black from the Dark Tower. Randall Flagg is another manifestation that probably rings bells in the back of your brain.
Walter would love interesting praeternaturals, or even lovely little meatbags... um people to play with.