DC Database

Replikon is an alien with the ability to mimic and adapt to elements of any opponent that they face. He has faced a number of Earth heroes, including Green Lantern, Green Arrow and Superman.

Millions of years after the destruction of his planet, Xum found the perfect world where his two unborn children would ensure the continuance of his race. Unfortunately, that world was Earth, and the only way to make it a suitable environment was to destroy the ozone layer, which would extinguish all other life on the planet. Shifting from his natural gaseous state into humanoid form, Xum called himself Replikon, and for good reason: besides assuming a hybrid appearance that copied the elements of several members of the Justice League, he was also able to duplicate those heroes' abilities. Replikon also took on a human form and called himself Andre, then proceeded to learn everything he could about Earth from Carol Ferris, the one-time love of Green Lantern, Hal Jordan.[1]

Ultimately, Jordan, Green Arrow and Black Canary thwarted Replikon, then returned him to the asteroid belt form where he came.[2] There, he later encountered Green Lanterns John Stewart and Katma Tui, who understood the alien's plight and built him a world within the asteroid belt.[3] Replikon gave birth to Sachi and Yukinori, and the family of three lived happily ever after - that is, until the alien having undergone some alterations, recently returned to Earth, battled Superman in Metropolis, then inexplicably died moments after being defeated. Then Superman faced Xum's son. Evidence suggests that the Replikons were controlled by an unseen hand, one with interest in Superman. It was later revealed that the villain Ruin (revealed to be Emil Hamilton) was behind Xum's return, as well as his son's attack on the Man of Steel.


  • Although this character was originally introduced during DC's Earth-One era of publication, their existence following the events of the 1985–86 limited series Crisis on Infinite Earths remains intact. However, some elements of the character's Pre-Crisis history may have been altered or removed for Post-Crisis New Earth continuity, and should be considered apocryphal.



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Green Lantern Villain(s)
This character is or was primarily an enemy of the Green Lantern of Earth, or the Green Lantern Corps as a whole. This template will categorize articles that include it into the category "Green Lantern Villains."
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This character is or was primarily an enemy of Superman in any of his various incarnations, or members of the Superman Family. This template will categorize articles that include it into the "Superman Villains category."