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 JLA, He was also able to duplicate those heroes’ abilities. |