While watching a commercial for Dwayne "The Rock" Johnson's new movie, which looks like some sort of weird cross between "Falling Down" and "Death Wish", I got to wondering about one-man killing machines. Specifically how people tend to joke about Hamlet being the bloodbath where everybody dies at the end. But, really, Hamlet only deliberately kills Claudius, no? He wounds Laertes, sure - but he didn't know about the poison at that point. Likewise he sends R&G to their doom, but he's not the one to pull that trigger. And Polonius, well, I suppose Polonius counts, but he was technically an accident. So we'll mark Hamlet's bodycount at 2, since even though he killed the wrong person, it was certainly his intent to kill somebody.
So, then, here's the question. For onstage, mortal injury of another character, who has the highest body count in all of Shakespeare? I'm saying "onstage" on purpose, because the question really has more to do with how much killing the audience sees. So Macbeth's murder of Duncan and the guards, for example, wouldn't count.
Tybalt/Mercutio is why I called it "mortal injury". Wounding somebody who then dies off screen? That counts.
I'm not familiar enough with each of the tragedies to count up accurately. Who wins? Richard? Titus?