A/N: So, I'm rewatching Good Omens and I decided to write down the random theories that come to me when re-watching shows and my reactions to some scenes, here's part 1, Enjoy!
-MidnightDawn
In episode 1 of Good Omens when Crowley is signing the paper to get the Antichrist from Hastur and Lingur he sets his finger on fire (and I'm assuming it is hellfire) and then signs the paper with a mark that if you have read the book know is his true name. After he signs the paper he quickly shakes his hand to put the flames out and his face makes it look like he's in pain. Earlier we see Hastur light a cigarette with what we can only assume is the same type of fire and even though Hastur's entire hand is on fire while Crowley only had the tip of his finger lit, after Hastur is done lighting the cigarette he hangs the STILL BURNING HAND by his side and makes no move to put the flame out, he also shows no signs of even the tiniest bit of pain. This leads me to believe that while Crowley is still a demon, either "sauntering vaguely downwards" wasn't just Crowley's way of saying he fell and something else entirely happened or Crowley did fall but because of his friendship with Aziraphale (*cough* Love for Aziraphale *cough*) he is becoming less of a demon not just personality wise but physically and considering that at this point in time they couldn't talk very much now that the apocalypse is over and they are both outcast from their respective head offices they will be spending even more time with each other. We can only wonder what changes Aziraphale will go through, and if there will be any at all.