Nillcox
Batman of Zur-En-Arrh
I was thinking that if they were to go the original character route in this that it would be in a timeskip scenario taking place long after the regime plot, with the character being the son of Supes and Wondy, basically a variation on Superboy. Children seem to come up a lot in the comic with the death of Lois and her unborn baby, the upcoming appearance of Damian and Ares threatening to go after the future child of Clark and Diana. Something has to happen with those two having a child, and that could be a likely scenario.If you want a wild theory it could also be Lucy Lane, Lois sister wanting to killer superman for killing her sister.