After watching Jessica Jones (friggin’ excellent by the way, but full of horror), this question has finally coagulated enough to bubble up to the surface of my brain. One of the basic tenets of the superhero, one that decisively divides them from the villain, is this: thou shalt not kill. At least not intentionally and not mortal humans. Yes, there are exceptions: Superman killed Doomsday, Wolverine killed Jean Grey in X-Men 3, Silver Surfer allowed entire planets to be wiped out until he ‘converted’. There are characters who don’t follow the rules, like Deadpool and The Punisher, but they make it clear they are anti-heroes. They are bad guys fighting…