From the Brothers' perspective, their first chronological appearance is in the White Sheep universe. In this appearance; the God of Light is arrogant, hypocritical, Holier Than Thou, and he insists that retaking his dominion over Remnant and ushering in his (less than ideal) idea of Paradise or otherwise "wiping the board" when mortalkind resists this is what's right — the God of Darkness meanwhile is constantly shafted by his brother just like he was when they last ruled Remnant, and he's bitter about it. Both the Gods are at their most petty, childish and humanized comparative to their other appearances. To recap, their role in White Sheep ends with the God of Darkness being talked by the very mortals that they condescend into rebelling against the God of Light for his mistreatment — at the end of it, Darkness discorporates Light, stating that Light will reconstitute after a thousand years have passed, and that when he does, the two Gods will be having words on forming a more equal balance between them. Darkness also in response to mortalkind's vital role in his victory over Light plays the part of a Reasonable Authority Figure, leaving Remnant in peace in exchange for continued worship from the inhabitants, instead of destroying the world as we know it. Here, the Brothers are at their youngest and least mature comparatively speaking.
Arc Royale is the Brothers' second appearance from their POV: in this fic, they appear more detached and otherworldly, but they also appear to be on equal footing with each-other unlike they were in White Sheep. They still don't see their mortal creations as anything more or less than an experiment that went off the rails and disappointed them, and they still don't understand why humanity won't behave the way that the Brothers expect them to in any of the hundreds of universes they've surveyed. The God of Light shows some new semblance of humility in his admittance that he's frustrated by not only his lack of control over humanity's shortcomings but by the fact that mortalkind have always assume having a loving and benevolent deity is a one-way street where the deity was never considered a flawed being that craved rewards for their love and sacrifices in turn. In the end, the cast persuade the Brothers to just leave their Remnant alone as it is, and go away to make something new that might satisfy them better on another world. This is occurring from the Brothers' POV after the God of Light reconstituted from the events of White Sheep and after he and the God of Darkness have had their words and struck up a more equal footing, humbling Light a little and making him self-reflect a little more.
And Relic of the Future is the Brothers' last appearance from their POV. In the last several chapters of Relic, the characters speculate that a lot of the Brothers' Jerkass God behavior in Remnant's backstory comes from a relative lack of maturity at the time, and the Brothers have the potential to learn, grow and wizen up with experience and time. This interpretation is virtually confirmed in the fic's final chapter, when Jaune Ashari is returned to the Bad Future in his original native universe, and the God of Light (and possibly also his brother) personally speaks to Jaune through Jinn. The God or Gods' voice(s) confirm to Jaune that (A) they've outright admitted fault and apologized in person to the recently-deceased souls of the Salem and Ozma from Ashari's universe(s?) for the Brothers' past actions and misjudgments, (B) that they have no intention of reclaiming Remnant because they've grown to understand since they first abandoned it that it and its inhabitants are better off for their absence, (C) that they at first didn't think much of Ashari at all for accepting Salem's Deal with the Devil at the fic's start, but as they watched him better many lives in the second timeline and accept the lesson that Salem never could, they realized that they misjudged him and were genuinely impressed by what he did with the second chance that he attained; and (D) they throw Ashari a bone before departing for good by alerting him to the Bad Future's Ruby being Not Quite Dead, after they've lightly encouraged Ashari to try and better the Bad Future that he's returned to instead of immediately ending his life there and then to await his loved ones from the second timeline in the multiversal afterlife. The Gods in this appearance show even more kindness, humility, understanding and self-awareness than in either of their above two appearances, and they've already acknowledged before they show up here that Remnant is better off if they stay away, meaning that from the Gods' chronology this is their final appearance in the Coeur multiverse.
