I don't know much about him, other than that he obtained Dr.Manhattan's powers as well as some form of energy to top it off? Either way he created his own pocket universe(only had 52 universes iirc?), But outside of creationary abilities, how would he fair in a fight with:
-Thanos
-PC-Darkseid
-Odin when he fought the Celestials in Destroyer armor
-A Celestial
-Full Galactus
-The Spectre