User blog comment:Halley/Superman crosses that line...again./@comment-18172179-20170511023102/@comment-6369172-20170511120412

>> for the best part of the Golden Age, Bats had no issues with killing<<

Wouldn't go that far, but he DID have machineguns mounted on that first autogyro edition of the Batplane, and used them with gusto in mowing down Hugo Strange's first batch of Monster Men (transformed asylum inmate kidnappees). And of course he shot The Monk, and his concubine, IN THEIR SLEEP with a handgun, not very sporting. But he did stop the killing by or before 1940 IIRC.