Comics in which Batman kills

[The Laughing Fish]

Following the last post of that example in JSA: The Tenth Circle, that very same story shows Batman killing another vampire during the Justice League and Doom Patrol's fight against the convergence of vampires, who have taken innocent people and other metahuman heroes as one of their own. As outlined in this example, Batman is clearly instructing everyone to not hold back against anything that doesn't resemble human.



It should be noted that Superman vanquishes the leader Lord Crucifier with a crucifix, who had enslaved the Man of Steel for the vast majority of the story.