- This article is about Clark Kent of Earth-13. For his Earth doppelganger, see Clark Kent. For his Earth-2 doppelganger, see Clark Luthor.
Not much is known about Clark's past besides the fact that unlike his doppelgangers, Superman and Ultraman, he is not an alien from the planet Krypton but a human from Earth, meaning that he doesn't possess any superpowers.
Clark was a hero wannabe, influenced by comic books, so he donned a homemade costume to fight crime and right the wrongs of the world. At some point, he somehow discovered that Bruce Wayne was actually the secret identity of the mystery villain, who terrorized Gotham City, so he revealed his identity to the police. Because of that Clark became the next target of the sadistic criminal but when he went after him, their homeworld was already being destroyed by the Monitors, so Clark jumped inside a portal, unknown to him he was followed by Wayne, which transported both to a parallel Earth.
After being transported to an alternate Gotham City, Clark confronted Wayne but he was beaten to death by him and his corpse was left on the street. After the beating his face was so disfigured that nobody could identify him.
Later, Commissioner James Gordon shows to Batman the corpse and tells to him that this sort of hate crime is right up his alley. Batman then started interrogating many other criminals for information about the young man's murder. In the Batcave, Batman says that he believes it looks like a hate crime connotations against the aliens and the recent revelation of Superman about his origin. He then proceeds to use his billion dollar computer to make a face reconstruction of the corpse based on photos from the crime scene, so he can identify the man but he is left speechless by the results that show the face of the murdered man is Clark Kent.
Lois Lane and Nightwing walk through the streets of the rainy Gotham City, backtracking the final footsteps of the deceased "Clark Kent", whom the decided to call "Dave". Lois says that the victim's DNA was proven to be human so he can't be Clark and besides that she knows that her fiance is safe in Russia.
In the morgue, Batman and Commissioner Gordon examine the body of the deceased Clark. Batman scans the body with a device, finding DNA samples from the killer, which reveal something he says he'd rather not share. He and Nightwing later confront Clark's killer, who after he is defeated by Batman, he confesses the murder.
In the Comics
The concept of Clark Kent being a human and not a superpowered Kryptonian, has been featured many times in the past in the comics but mostly on Elseworlds stories.
Originally, Clark Kent from Earth-Prime did not have any super powers, even though he was a Kryptonian. His powers were finally triggered by the passage of Halley's Comet overhead.
In Batman Chronicles's story line titled Citizen Wayne, Clark Kent appears as a reporter sent by his boss to investigate the last word of eccentric millionaire Bruce Foster Wayne. Clark is never shown or implied to have become Superman, meaning that this version of the character is human.
In All-Star Superman, a character called Zibarro appears living on Bizarro World. As Bizarro is the opposite counterpart of Superman, Zibarro is the opposite counterpart of Bizarro. He resembles Superman and is only one out of billions that has the mental abilities of a normal human being but he has no apparent powers. He helps Superman to escape from Bizarro world, unselfishly giving up his own chance to do so.
In Superman & Batman: Generations, Joel Perry Kent, the son of Superman and Lois Lane was born human, without any of his father's powers because of being exposed to gold kryptonite while his mother was pregnant to him.
- The "Superman" costume of the young dead man found in Gotham City is a nod to the costume that Clark Kent wears in his early adventures as Superman in the New 52, which have been featured mostly in the pages of Action Comics. Originally the idea of Superman's first costume being a lot simpler (blue jeans, T-shirt with the "S" symbol and work boots) than the iconic costume he later adopts was first introduced in Smallville, where in the most parts of the show he had the red-jacket/blue-shirt look. This simpler look has also being used by some other members of the Super Family in the comics like Superboy and Supergirl (Linda Danvers).
- Given that this Clark Kent is a human and not a Kryptonian, it is possible that he is an alternate reality version of the Clark Kent from the Apocalypse timeline, who was the biological son of Martha and Jonathan, rather than Kal-El.