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Metallo has tried in Superman/Batman: Public Enemies
Superman gave a piece of kryptonite to Batman to study, even though Batman tried to kill Superman with it during the Tower of Babel story arc.
It depends on who is writing Batman at the time but I do recall a few instances where Superman has provided Batman with a sample of Kryptonite as a safeguard just in case he goes out of control and needs to be stopped. I think we can assume that Batman carries it around with him like a hot girl with a can of mace. Just in case. In several instances Batman has had to fight a Kryptonian and in some of those circumstances he releases a hidden latch on his belt. Then the belt buckle opens to reveal a piece of Kryptonite inside. Again, this depends on the version and author. However, with the exception of versions w/o Superman, Batman indisputably has a plan to kill Superman 'just in case'. THis can range from Kryptonite to modifying the Batmobile's headlights to be red sun lamps.
Superman heard a clang. Superman found Batman. "Give it up, Batman!" Superman threatened. "No!" Batman yelled. "I can defeat you." Superman heard it. "You asked for this!" Superman said. The brawl started. Batman noticed something powerful. Superman's only weakness is kryptonite. "Go away!" Batman threatened. Superman thought about it. "No! I will not go away!" Superman said. Superman picked up a machine and threw it at Batman. Superman beat Batman up. Superman finally killed Batman with a force choke and a punch in the face. Superman flew away. Batman has his head separated from his cape and body. Superman killed Batman on purpose. "Batman was weak!" Superman yelled. Superman won.
Batman is smarter. Superman is stronger. If they play chess, Batman wins. If they lift weights, Superman wins.
super man becaues he can get kill by the same thing we do and you know why the other one
if bats knows he gonna fight them he can kill superman even tho wonderwoman would never fight him she loves him and he uses battarangs he can pierce her pump gas in her mouth batman wins with preperation but no prep bat wonderwoman kills batman then takes kryptonite from his utility belt puts it in her hands for a fist and punch superman to death
Yes batman got him in a haedlock and killed but wait Batman doesnt kill so some random off the steet stabbed him
There are different kinds of intelligence. Superman has a Kryptonian brain which makes him very good at the sciences. But he considers Batman to be the most dangerous man alive. The best way I know to put it is that Superman can fight a battle-- Batman can plan a war. It is a pretty safe bet that Batman has devised means to neutralize or if need be even kill, every superhero out there, in case they go bad. Batman has the strategy skills.At the end of "Dark Knight Returns", Batman has to plan an attack on Superman, basically to beat Superman to a pulp and make him understand the wrong he has done by being the Government's lap dog and getting rid of all the other superheroes... that "the American Way" does not consist of letting the government get arrogant, secure in the knowledge that whatever the world's response, Superman will clean their clocks. Batman would never have fallen for that to begin with, so his patriotism could not be used against him.They would be eqaul, Batman is a genius, and Superman can learn anything in a second.
no a lightsaber would not kill superman
BATMAN
Clayface can Kill Batman But not Eat him Batman can eat him.