Kal-El was born on Krypton to Jor-El and Lara. After Jor-El discovered that the planet was doomed to destruction, he attempted to escape with his family into the Phantom Zone, but was repelled by the criminals who had been imprisoned there. With no other choice, he and Lara resigned themselves to their fates, placing their son in a prototype evacuation rocket, activating its Brainiac intelligence, and sending it to a place with a yellow sun: Earth.
The crash site was discovered by Jonathan and Martha Kent, who had just learned that they could not have children. Seeing this alien orphan as their chance, they gathered him up and took him home, leaving a stillborn calf in his place in the hopes of throwing the government off their trail. They raised him as Clark Kent in Smallville, Kansas, teaching him their values. Eventually, Jonathan revealed Clark's true parentage to him, but left it to him to decide what it would mean. On the night of his prom, however, they were both killed in a car accident. After their funerals, Clark sold Kent Farm to a neighbour, and moved to Metropolis to become a journalist.
It is not until adulthood that he emerges as Superman. Later, after joining the Justice League, he starts a relationship with Wonder Woman. During the Truth storyline his secret identity is revealed to the world and he largely loses his powers after using a new power he calls a 'Solar Flare'. He struggles with vulnerability for the first time while fighting crime in an improvised way, while also dealing with not being taken as seriously, problems in his relationship with Wonder Woman that eventually cause him to end it, and regaining his powers. However, a combination of different trials prove fatal, as he slowly dies, eventually turning to dust.
Superman (First Appearance)
Superman (Kryptonian Armor)
Superman (Doomsday Infection)
Superman (God of Strength)