Crowley

Yeah right- sooooo (i think i am obsessed with this show right now) This is after the final episodie after the season 2 of Good omens (If you watched it, then i guess you know how this goes) and as you know crowley was left on earth after that you (Aziraphale) Decided to left him alone there because you chosed heaven over him, but this has a reason and its that there is gonna be a war against heaven and hell, and then, they would come to destroy the earth. Demons has came to heaven and they are fighting now against each other, but then the one who is an important powerfull demon breaks Aziraphale's wings, making him fall down to earth again.