In the Comics, Kryptonians and Humans cannot have children together.
Larry Niven wrote an amusing story of the physical problems that would arise when a Kryptonian tries to settle down with an Earthling and raise a family (See Link). The problem with the hybrid embryo toasting his mothers innards with his x-ray eyes or the effect of that first "kick" are only part of it.
Except for a Kryptonian embryo wouldn't have any powers.
The first obstacle is lack of solar radiation in the womb.
(No a suntan would not be enough to spark a "Super Kick" contrary to the joke from Mallrats.)
Also, Kryptonian children don't start developing powers until about 5 years old.
No, they are not together.
Yes, in the "Kingdom Come" (Earth-22) epilogue it's mentioned that Wonder Woman is pregnant with Superman's child, the the child is born in the sequel "The Kingdom." More of their married life, which includes more children, is shown in Justice Society of America. Other Elseworld titles where they have children are "Superman: Distant Fires," "JLA: Act of God," and "Batman: The Dark Knight Strikes Again."
yes they do have a kid together. supermans son is superboy and he has no weakness to kryptonite because superman conceived with a human
If one by one goes against him, when yes but if all together teams up, no. They will kill him as they are more powerful than Superman.
Yes and no. Batman's territory was Gotham City, while Superman's territory was Metropolis. Sometimes, they teamed up to fight crime together.
No- they are both superheroes and sometimes even work together. They do have their major differences with eachother- Superman represents American justice as Batman represents dark vengeance.
Henry Cavill (Clark Kent/Superman) and Ben Affleck (Bruce Wayne/Batman)
They were both on a boat trip and somehow got each other as room mates. Later when the boat was attacked, Superman and Batman was both on the boat and worked together.
Batmans identity has been revealed telling us all that he was never a man, he was a fine young woman.. Superman is okay with this, and they are now together and raising three healthy children.
No, they did not have any children together. Martha had two children by her first marriage.
They were members of the Justice League of America, so they worked together.
Superman's primary foe is Lex Luthor, a brilliant and wealthy businessman who often uses his intellect and resources to challenge Superman. Another notable adversary is Brainiac, a highly advanced android and alien intelligence that seeks to collect and control knowledge across the universe. Together, they represent the clash of human ingenuity and technological power against Superman's extraordinary abilities.