Are there any exceptions to Batman's no-killing rule? Eg. Would Batman kill: zombies? (Solomon Grundy) aliens? (Darkseid) animals & plants? (idk, thb) artificial life? (Brainiac, HARDAC) Immortals? (Ra's al-Ghul) Unwilling life? (Doomsday) Irredeemable mother**kers? (child murderers?) Non-direct killing? (Throwing live grenade back at the thrower) Sorry, but watching the new BvS movie has gotten me thinking about these stuffs. Any answers from any main, non-elseworlds interpretations (eg New 52, Old 52, DCAU, etc) are welcome. EDIT: Just to be clear, I was talking about possible situations where he would cross the line. Although the answers so far have been helpful (thank you, @HBhatia), I was actually referring to situations where if he would/would not cross the 'established' no-killing rule, such as facing Solomon Grundy, Darkseid, Ra's al-Ghul, HARDAC, Brainiac, etc. I do apologize if my question was unclear. Answer Batman was a killer from his very first a...