> If Batman needed to, could he defeat and kill and angry Superman without green Kryptonite or any of its isotopes?
> I've seen Batman dish out some brutality on Superman, but in most cases, as evil Supergirl comments, it's 'tricks' at best. Or, Batman dishes out the pain while using green K to otherwise weaken Superman. He's used sonics, electricity, etc, and while harming him, I'm not sure I've seen any alternate tricks actually down Superman to the point where Batman could kill him.
> So if Batman didn't have Kryptonite (perhaps it never made it to earth), has he ever demonstrated an ability to still be able to kill Superman if the need arose?
Batman can use all his money and tech, but has to do the deed himself. Possible?