[@Rtron]

Susa is a Hero of Emotion, of whom has been around for quite a while, now, I'm sure she would be equipped with the mental fortitude to withstand Xerxes. Same with Lakshmi, if anything, I think Chroma would have issues with Xerxes.

Also, who's to say I'm not going to train the Cosmic Knights? It would be silly to just give them powers and then throw them at Xerxes, even then, the "Hell" part comes when Lif confronts Logos.