Darkin Targon ?!
Aatrox has many interactions against Targon and the clams to be the god killer ¿ What gods ¿ What if Darkin are in the same world / realm that the real Targon is . The golden city / the heavenly city . And by gods that he killed he meant Aspects. It would make sense it would be like the classic battle between heaven and hell. That would explain how he knows that much about the aspects about Targon in general. And calling them betrayers, maybe they punished him turned him into a Darkin . Then he went on a killing spree killing the aspects (that would make him the "god slayer") And then the Aspect of change / trickster god trapped all the darkin in their weapons and were exiled to Runeterra. And then all the events that happened follow. And when Aatrox interacts with Pantheon and Taric he always starts with Hail. Now he says that mockingly but it look to me that he used to look up to them to have respect to them. And now he has none left for them so he says Hail in that way. And he has knowledge about the void and the one big enemy on Targon is the void itself.