Kal-El (New Earth-Eight)

Origin
Superman's origin is the same as most of his alternate selves, with him being sent from the dying Krypton to Earth by his parents and raised by his adoptive parents the Kent's in Smallville. He developed his powers at a young age and had a brief stint as Superboy and joined the Legion of Superheroes during his teenage years to gain a better control of his powers.

Justice League Years
When Kal-El, now known as Clark Kent became an adult he took the name Superman and began operating out of Metropolis, where he became the city's champion of justice. During this time he would help form the superhero team known as the Justice League, and began a relationship with Lois Lane, who he eventually married.

Also during this time, Superman fought many villains with Lex Luthor being according to him his most dangerous foe. But he would not face him or his enemies alone and gained partners to aid him, in the form of his cousin, Supergirl, his clone, Superboy, and inventor turned hero, Steel, to name a few.