Superman

Superman was born Kal-L of the planet Krypton. His father was the esteemed scientist, Jor-L, and his mother was a librarian named Lora. While Kal-L was still a toddler, his father discovered that the planet Krypton teetered on the brink of absolute destruction. Realizing that there was not enough time to save everyone on the planet, he deposited his son inside of a specially designed rocket ship and launched him into outer space. As Kal-L's rocket broke the atmosphere, the planet Krypton exploded.

After traveling through space for an indeterminate amount of time, his rocket eventually crash-landed in a small farming community named Smallville, on the planet Earth. Though at first placed in an orphanage, Kal-L was soon adopted by the Kents and given the name Clark. Over time, he discovered his many powers. During his teen years, Clark met a strange visitor from another universe—his own counterpart, Superboy, of Earth-One! The more experienced Superboy helped train Clark in the use of his powers. During this period, Clark briefly worked as a circus strongman under the identity of the Masked Wonder.[4][5] Mary (Ma) Kent later died, and when John (Pa) Kent was on his death bed, he made Clark promise to use his powers for the good of mankind. Taking the advice to heart, Clark created the identity of Superman.

Clark earned himself a job as a reporter at the Daily Star after turning in a story about Superman's first public act. Despite his honorable intentions, Superman was not initially considered a hero, and was in fact regarded as a vigilante working outside, and at times, against the established legal authorities. Many of his earliest public actions showed Kal-L engaging in aggressive actions against wife-beaters, slum lords, and various other social criminals, which included corrupt politicians and law officials. As time progressed, Kal-L began to fight against larger, more direct, and obvious criminal organizations which gathered his public identity as a hero, most notably against the Earth-Two Alexei Luthor (who, unlike Earth-One's Lex Luthor, still had his red hair and a far more bloodthirsty nature).

As Clark Kent, he reported on his own costumed adventures and was eventually partnered with Lois Lane, a courageous female reporter who had a crush on Superman, but who didn't think much of the timid Clark Kent. Lane and Kent would usually butt heads with each other on getting the most adventurous stories, but the two eventually became respectful of each other. Lane would eventually start to suspect that Kent and Superman were one and the same, based on Kent's continual absences whenever Superman would appear, and Kent's extensive detailed reports before Lane could phone in the story, despite being at the scene of the adventure. Lane would eventually confirm her suspicions, resulting in her marrying Kent in the 1950s.

After establishing himself as one of the premiere heroes of Earth-Two, Kent later started to focus on his personal life, advancing his own reporter career to become the Lead Investigative Reporter for the Daily Star. Always mindful of his dual persona, Kent kept his ambitions in check, and "Superman" largely remained a retired persona. This would change in the early 1950s, when two of Kal-L's enemies would fight to see which nature was more powerful — the advanced science of Colonel Future, or the ancient mystical powers of the Wizard. After several defeats at the hands of the "Man of Tomorrow," Colonel Future challenged the boasted powers of the Wizard to prove its effectiveness over his own super-science against their greatest threat, Superman.

To prove his superior powers, the Wizard cast a spell to rid the world of Superman. The spell misfired, and made Clark merely repress his superhero identity. Freed of his need to repress his more aggressive and assertive persona, Kent acted out his nature, but without his costume and his flight abilities. Kent continued to battle evil as an open, crusading reporter for some time, even directly engaging in hand-to-hand battles against criminals, which, of course, he would routinely win, due to his superhuman strength and bulletproof skin-density. Also freed of his self-restrictions, Kent once again expressed his affections for Lois. Without his clumsy acts and disappearing devices, he eventually won the heart of Lois Lane as Clark Kent. The two married, but Lois discovered Clark's secret while on their honeymoon when trying to cut Clark's hair, which broke the scissors Lane used. Torn between her love of Kent and the world's need for its most-noted hero, Mrs. Lane-Kent tracked down the Wizard, and made him reverse the spell. Lois then tried to forsake their marriage, but Kent wouldn't let her. Kent decided to confirm their marriage in both Earth and Kryptonian ceremonies.[7] Later, George Taylor retired as editor-in-chief of the Daily Star, and Clark replaced him in that role, promoting Lois to Lead Investigative Reporter, though he would usually still follow her in many of her dangerous investigations as Superman.

By the 1960s, it was clear that Kent was not immortal, and he began showing his age. In the 1970s, his cousin Kara arrived on Earth-Two after her decades-long journey (unlike her Earth-One counterpart, Kara's rocket was damaged). Kal-L mostly retired from heroic activity, focusing on his personal life as editor of the Daily Star, leaving the costumed heroic actions to the younger generation, including his cousin Kara. who had adopted the heroic name of "Power Girl." Kal-L still occasionally engaged in his Superman-identity, even formally joining the reformed Justice Society as an active member, though only part-time, preferring to remain in "semi-retirement." It was during this time that Kal-L eventually met his Earth-One counterpart, Kal-El.

Though Kal-L and the Earth-One Superman were initially shown to be an even match to each other in their first meetup,[8] it was clear in all subsequent meetings that the Earth-One Superman was far more powerful than the aging Kal-L. Despite his age and weakened powers, Kal-L was still one of the most powerful beings ever, and continued to fight against evil whenever possible.

Despite being mostly retired from heroic actions, Kal-L was one of the first heroes recruited by Harbinger and the Monitor to fight back the assault on all populated universes of the Multiverse. Kal-L was pivotal among many of the battles to defeat the Anti-Monitor, who was eliminating positive-matter realities in order to increase his power levels to allow him to recreate the universe in his own dark image. Kal-L and many heroes from different universes of the Multiverse engaged in several battles against the Anti-Monitor, but were not able to stop him directly, despite massive losses of heroes, as well as many of the populated universes. Kal-L and the others directly assaulted the Anti-Monitor at the "Dawn of Time," which caused the various universes to collapse into one singular universe that was able to withstand the Anti-Monitor's assault. Unfortunately, the singular universe erased the history of the universe that Kal-L came from, and most of the people he knew outside of the heroic community, including his wife Lois Lane-Kent. Nearly insane with grief, Kal-L was able to gather himself together despite his intense sense of loss, and, along with the equally-alone Superboy of Earth-Prime, directly attacked and killed the Anti-Monitor. The energy release resulting from the Anti-Monitor's physical death threatened to overcome and kill Kal-L and Superboy-Prime. Alexander Luthor, Jr. of Earth-Three appeared, offering to transport them out of the resulting shockwave, but the still-grieving Kal-L decided to end his life, rather than transport to safety. Lois Kent then emerged from the pocket dimension.

Alexander Luthor, Jr. had saved Lois Kent from the universal reset by taking her from the dying Multiverse to a newly-discovered pocket dimension before the battle at the "Dawn at Time," thus saving her from the reset. Luthor then took himself, Kal-L, Lois Kent, and Superboy-Prime into the pocket dimension, saving them from the destruction of the Anti-Monitor's exploding energies, and a universe that would no longer remember them.

Kal-L continued to watch the new Earth from the pocket "Paradise" dimension. He was beginning to get disturbed by what he saw as the "growing darkness" that was apparently affecting the Earth, especially in the indecisiveness of his resulting post-Crisis counterpart. That darkness began to affect the Paradise dimension, and as a result, Lois began to get deathly ill, despite the pocket dimension being insulated from the outside reality.

Deciding that the resulting Earth had been corrupted, Kal-L had decided, along with Alexander Luthor Jr. and Superboy-Prime, to reformat the existing universe using themselves as the primary template, rather than the current incarnations of the heroes. Kal-L hoped that would reverse the effect on his dying wife, even though that would kill the new Superman's wife, though he thought of it as merely "folding the current incarnations into his own template." Even though he knew that those who would be "folded" would cease to live, he was still willing to take the risks and guilt to save his Earth and those he loved.

Deciding that his greed was permissible, versus the corruption he saw in the current universe, Kal-L punched his way out of the pocket dimension, and the quartet established their base of operation in a cave in the Arctic Circle. Kal-L revealed himself to Power Girl, as well as to the current incarnation of his best friend, Batman, hoping to get them to agree to his plan to recreate the universe to his expectations. Both refused him after being shown the Earth-Two versions of their histories, though Kara was more accepting of Kal-L than the current Bruce Wayne, who argued against Kal-L for losing his version of the Batman Family, as well as the death of the Earth-Two Bruce.

Kal-L continued on his quest to bring back his version of history alongside Superboy-Prime and Alexander Luthor Jr., which culminated in the recreation of an exact duplicate of Pre-Crisis Earth-Two, though it was completely unpopulated. Seeing his goal achieved, Kal-L was overjoyed to see his old world back as the potential cure for his wife's pending death. Kal-L's joy turned to heartbreak when Lois died, despite their seeming return to Earth-Two. The current Kal-El heard Kal-L cry out in agony, and came to Earth-Two to investigate. Kal-L lashed out at him, blaming Kal-El for "corrupting" Earth-Two, and thus killing Lois.

As they fought, the two heroes found themselves being "transported" to each other's Earths, reliving their histories and altering them. Kal-L would alter Kal-El's first encounter with Batman, as he called out his bluff and turned the two into true friends. They would go on to arrest, and then save, Lex Luthor's life when he was inflicted with Kryptonite-poisoning. He would also snap Doomsday's neck during their first encounter, surviving what should have been his death. When heroes started rising up against Kal-L's more violent methods, he would strike them down with his own Justice League. In the end, this war of the metas would leave Earth-One a lifeless husk, leading Kal-L to realize that Earth-One wasn't worth saving, but Earth-Two was.

During this time, Wonder Woman arrived on Earth-Two and restrained Kal-L. She and Kal-EL made him realize that reconstructing the universe would not bring about the changes that Kal-L had hoped, as the recreated Earth-Two clearly showed.

Seeing that he was wrong, and that the ambitions of recreating the universe would not bring about an improvement, Kal-L decided to correct his mistake. Alexander Luthor, Jr. and Superboy-Prime decided to continue to recreate the Multiverse in order to achieve their goals, despite the pleas from the current heroes and Kal-L to stop.

Seeing that Superboy-Prime and Alexander Luthor, Jr. were committed to reshaping the universe, Kal-L directly attacked them in the hopes of preventing more deaths. Superboy-Prime had decided to directly assault the individual people he considered unworthy in the current universe — most notably the current Superboy, Conner Kent. The battle between the two Superboys ended with Prime killing the vastly under-powered Conner, as Prime's power levels were shown to be literally infinite, with his physical strength-levels able to push planets out of orbit unaided, which was beyond Conner and Kal-L's levels.

Nevertheless, the two Supermen realized that Superboy-Prime was completely out of control, and was openly killing people and was not merely intent upon simply recreating the universe. Alongside many powerful heroes, Kal-L and Kal-El decided to attack Superboy-Prime head-on in order to stop his murderous rampage. It was decided to push Superboy-Prime through a red sun, in order to depower his strength levels to a far more manageable level in hopes of snapping him out of his depression.

Seeing that Kal-L had turned away from their original plan to reshape the universe to fit their demands, Superboy-Prime attacked Kal-L directly, venting his full rage and frustration at his one-time ally. Despite the effects of the red sun, Superboy-Prime was still vastly overpowered by Kal-L's own power levels. The attack was so vicious that Superboy-Prime smashed Kal-L's internal organs and skeletal structure, killing him.

But the time that Superboy-Prime dedicated to attacking Kal-L allowed Kal-El to recover and to drain down Superboy-Prime even further, thus knocking him out, whereby their combined attacks were able to stop Superboy-Prime.

Kal-L died in Power Girl's arms after realizing his mistake, and stating that he would never leave her, even though she would not be able to see him. Kal-L was buried on the new Earth that he died protecting from Superboy-Prime, alongside Conner and his wife.

Kal-L's corpse and base memories were revived by the Black Lantern Ring, and was used as an active weapon against the New Earth Superman and Conner Kent in Smallville. While not possessing the soul and judgment of Kal-L, the reanimated corpse joined Lois Kent of Earth-Two, who was also revived as a Black Lantern. Together they were specifically sent to attack and kill many people in Smallville, and hopefully the New Earth Superman and Superboy, as well. Kal-L was defeated by Conner, who used the Black Lantern Psycho Pirate's Medusa Mask against Kal-L, returning him to a inanimate corpse, while Black Lantern Lois Kent attacked Martha Kent, who was saved by Krypto.

Upon finding that Kal-L had been defeated and returned to an inactive corpse, Black Lantern Lois Kent sacrificed her own revival to reactivate Kal-L's corpse for its greater power-levels. Reactivated once again as the Black Lantern Superman, Kal-L's corpse was eventually stopped by the full Justice Society. Using a weapon devised by Doctor Fate and Mister Terrific that would completely destroy the reanimated corpses, Power Girl held onto his animated corpse until it was completely destroyed, ending any future attempts to use Kal-L's corpse as a weapon.

Brainiac collected the city of Metropolis from Earth-Two before the entire timeline is erased at the conclusion of the 1985 crossover story Crisis on Infinite Earths. The city is covered in a dome, which suppresses the powers of those within it and it's sent to Telos alongside many other cities from other doomed timelines. Kal-L and Lois are in Metropolis when it happens. During the next year, Kal-L eventually reveals his secret identity as Superman to the public, and works to help keep the city's peace. When the dome is opened, Kal-L and the other heroes recover their powers, however, Telos, an entity which claims to be the planet itself, announces that they need to fight against other domed cities for their survival, otherwise their own cities and people would be destroyed.[10] Refusing to participate in Telos' game, Kal-L stops the battle between Power Girl and Earth-30's Wonderwoman and leaves alongside Power Girl in an attempt to put an end to the entire battle.[11]

Following the conclusion of Convergence, Brainiac sends the Parallax infected Hal Jordan, Pre-Crisis The Flash, Earth One Supergirl and the New Earth version of Superman to stop the Crisis on Infinite Earths which originally destroyed the Multiverse. They're said to be successful in stopping the catastrophe. However, what exactly happened to Kal-L and other surviving inhabitants of the old Earth-Two in the new timeline isn't directly shown.