Comic: Deathstroke, Batman

His life is a path between two energized rails: justice and revenge. You cannot combine, you have to choose. He walks on the very edge, making people think he's crazy. This is how he makes mystery a weapon by making people think they are complex. In fact, it is very simple: there is a line. If you cross it, he will come for you. He's not a puzzle. He's a magic screen.