And even if he was (which he isn't) it wouldn't change anything for us. We still keep our eyes on Jesus and work to serve HIM. Not imposters.
Nor, as you pointed out, does it change a lot in our present earth-bound situation. Our leaders our made up of the dregs of society - even though you or I might not have voted for them; and the Country as a whole has no fear of God - and is thus reaping the bitter fruits of this harvest.
But we're fine. The Lord knows what HE has in store. Until then - serve HIM and point people towards our Saviour. Who knows, perhaps we'll have a 'healing' before the end.
2 Chronicles 7:13-14
If I shut up heaven that there be no rain, or if I command the locusts to devour the land, or if I send pestilence among my people; If my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land.
Sadly, I am starting to believe that the country as a whole does not even believe that God exits.
I hope that you are right about Zer0 not being the fallen angel, I really do, but there are some things that seem to indicate otherwise.
Time will tell, no doubt about it.