Spider-Man seems to have bad luck, or at least some of his opponents like the guy that killed Uncle Ben and the Green Goblin did. There are probably others... Which comic book HERO holds the dubious record for (purposely, or accidentally) ending up with the most dead bad guys? I'm looking for a comic book universe answer, not a movie universe answer.
In my corner of the comic universe, a hero is somebody on the side of law and order. A protector of the weak, a righter of wrongs. To me, someone like Spawn would qualify as an anti hero with heroic tendencies. Venom, Galactus or Thanos, not so much.