
Originally Posted by
DiaDeem
He's dead.
^This. Zenos is finally dead and gone. It's subtle but
if you watch the scene after the final battle with him (after Zenos and the WoL beat each other up), Zenos's breathing becomes increasingly shallow, and he manages to pant out a final "I....." before cutting out mid sentence. The camera even concentrates on his chest which is subtly rising and falling... before even that stops, showing he's stopped breathing, and then becomes completely motionless from them on. And it wasn't just the injuries the WoL gave him in the battle and their final fitsticuffs either, he was consuming his own life and soul to fight there and even with his Resonant powers, it wasn't infinite, so he was basically just running on fumes by that stage (even after using the last remnants of the Mothercrystal to become Shinryu, I'm sure he was also consuming his own life while in that form as well which would not have helped).
He even outright stated just before his duel that he was going to completely "burn through the candle of his life" in order to go full-out with the WoL, so he basically consumed his entire aether and life in order to have his last glorious final battle, and with his defeat, even his Resonant power couldn't save him anymore, especially at the edge of the universe where they were, where there was no one to jump his soul to, and so he just... expired. The WoL very nearly suffered the same fate except of course they were saved by a deus ex machina (and a lot of healing from Alphinaud, Urianger and G'raha).
So yeah, he's dead, gone and left to rot at the edge of creation, forgotten, unloved and unmourned. Good riddance.