Warning! SPOILERS for Superman and Lois season 2, episode 2, "The Ties That Bind."

Superman and Lois season 2 established that the Arrowverse Superman shares a common origin with the Superman presented in Zack Snyder's Man of Steel, being the first naturally born Kryptonian in recent history. While the idea of Kryptonians having given up natural procreation in favor of genetically engineering their children has been in place for decades, the 2013 film is the most updated retelling of the Superman story to mark Kal-El of Krypton as special due to the unique circumstances of his birth. This further cements the idea, common to many modern Superman stories, that Kal-El was a child of destiny apart from his status as the Last Son of Krypton.

The Superman and Lois episode "The Ties That Bind" found Clark Kent seeking the meaning of the painful visions of the future that had begun to plague him. Clark reluctantly enlisted the aid of his half-brother, the conqueror Tal-Rho, who escorted him to his own Fortress of Solitude and revealed that he had a hologram of their mother, Lara Lor-Van, as she was before Krypton's destruction. This Lara hologram was established as unique from the one that appeared in Superman and Lois season 1, who had been a part of the Eradicator matrix and briefly possessed Lana Lang Cushing. The Lara hologram was overjoyed to see her two sons together, but her joy turned to sorrow as Tal-Rho explained how his father's plans to turn Earth into a new Krypton were thwarted by Superman.

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When Lara condemned Tal-Rho and his father for trying to enslave the people of Earth using Superman and Lois' Eradicator technology she had invented, he turned upon her, claiming that she had abandoned him to his abusive father, Zeta-Rho, to save herself and start a new life with Jor-El. Lara insisted that she had no idea Tal-Rho existed until it was too late to save him, given how Kryptonian children were raised apart from their parents until reaching a certain age. When Clark asked how it was possible for her to have a child and not know it, Lara explained that all the children of Krypton were genetically engineered and that there had not been a naturally born Kryptonian for untold generations until his own birth. This idea of Superman being born of an act of love in a world ruled by science was most famously presented in Zack Snyder's Man of Steel.

Superman and lois breaking Arrowverse infinite earths crisis rules

The idea of Kryptonians having abandoned natural birth was first hinted at in Richard Donner's Superman: The Movie in 1978. The original script by Mario Puzo contained a scene in which Jor-El and Lara Lor-Van discussed the idea of love, which was unknown to Kryptonians, who had largely freed themselves of the capacity for displaying emotions of any kind. While this scene did not make it into the final movie, it still informed Marlon Brando's performance as Jor-El and a speech that did make it into the movie, where Jor-El hesitated in saying the word "love" to his son, as if unsure how to give voice to the idea. Comic creator John Byrne would later codify this vision of Krypton into his 1986 Man of Steel revamp, establishing that Kal-El had been born in a special Kryptonian birthing matrix rather than being conceived in the traditional manner.

Man of Steel would take this a step further, presenting Jor-El and Lara Lor-Van as a loving couple who defied the traditions of their people to have a child naturally. In this, the DCEU Superman was made into an ironic Christ figure, not born of a virgin birth in a corrupted world but of an act of passion in a world of logic. By adopting the same origin for the Arrowverse, Superman and Lois has likewise marked the Earth-Prime Superman as something unique to both his homeworlds.

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