Atheon, Time's Conflux is the son of Xylar, the Timeless We face him in the next expansion, he's mad we killed his kid Srsly tho what I gathered about atheon is that he is "times conflux" so he is the meeting point of the past present and future vaults of glass. Something about being ever-present all throughout time so the vex become like a law of the universe. It's some crazy shit. I think the vault of glass is a vex recreation of a hive throne world, like crotas end, where they can change laws of reality to their will. And times conflux is trying to activate that vault in the past and future together so it always was and always we be there ??