Playing Both Sides/Playing With

Basic Trope: A character manipulates both sides.
 * Straight: Emperor Evulz manipulates Bob and Bill into fighting each other.
 * Exaggerated: Every side is manipulated by Evulz into fighting against one another.
 * Justified: Evulz is a very skilled Manipulative Bastard.
 * Inverted: Bob and Bill both manipulate Evulz.