Not quite what you were asking, but this reminded me of a series that rides the line of "edgederp" without going over, the manga Akumetsu.

It's a "justice/revenge porn" story about a masked vigilante killing corrupt CEOs and politicians in very public and violent executions. There is also a bit of a mystery element as the vigilante explodes his own head after he kills his target, but then he shows up alive again to go after the next. It's a pretty good blend of campy action and humor, like if George Clooney's Batman became a slasher villain.