thinking about good omens swap au,,,,,
with my personal headcanons implemented and keeping it as in character for both as possible
headcanons mentioned are: crowley as lucifer and the metatron was the decision maker about his fall
this is just a rough overview of the au, i'll try and write a fic about it soon but yeahh
In the beginning, when Aziraphale introduces himself to Lucifer (i'll be calling Crowley that cuz he never gets his demon name in this au), Luci tells him his name too. So Aziraphale knows this is literally God's favorite angel and Oh Shit That's Important. So, when the Metatron finds out about Lucifer's questioning and decides to cast him out, Aziraphale steps up. He takes the blame on himself, says he was the one who talked to Lucifer about it and he was actually the one asking questions. Why he does this? Because he can't imagine how heaven would live on without one of its most important angels, so he's willing to sacrifice himself for that. The Metatron believes the lie and Aziraphale falls in Lucifer's stead, taking on the name of Zerael.
After Zerael's fall, Lucifer tries to argue with the Metatron a bit. He gives up pretty quickly because he doesn't want Zerael's fall to go to waste, but he still gets demoted as a result. So he's now on apple tree duty. Meanwhile, Zerael gets appointed to be the original tempter, taking the form of a black swallow (cuz yk swallows are symbols of good luck but black isn't eh whatever you'll see). Lucifer gets the flaming sword as a sort of cruel joke from heaven, Gods former favorite now needs a sword for protection. He (of course) gives it to Eve, he doesn't actually need it and she definitely does. When the two meet on the wall, it's a bit awkward. Lucifer is immediately happy and greets Zerael by his angelic name, causing Zee to have a bit of a shut down. He tries to act all demonic and mean, but ends up asking how Lucifer is doing in heaven. Luci kind of skirts around the topic. "Oh, you know, the usual celestial harmonies and whatnot". Zee isn't an idiot, he asks why Luci's on apple tree duty if everything's fine. Luci tells him he's been demoted but it's nothing to worry about. "Really, it's more interesting now! I get to see more than just white walls all the time". Wing shelter thingy but Zee tries to do it first, getting burned by holy rain in the process because bird brain so Luci shelters him instead.
General stuff now that the backstory is over with
(I'll get into the flashback scenes in a different post, my fingers are starting to hurt lmao)
Zerael changes his name Zirael, which literally means 'swallow' (according to wikipedia)
Zee still opens a bookshop, he loves books and food just as much and explains it to the Dark Council as getting to know human pleasures to tempt them better
Luci still has the Bentley. Just this time it's white. He bought it black but heaven didn't like it so he miracled it white. It still plays Queen automatically because it's the only way Luci can show off his chaos.
Luci still has houseplants, but he treats them well. Why? Because he can't keep them up to heaven's standards, not after Zee fell to save him. Instead of torturing the plants, he treats them like how he thinks Zee should've been treated. Leaf spots are fine, imperfections are okay. The plants are the most beautiful in London, and also the happiest.
The Arrangement is still the same, only Zee proposed it because he's still in denial about falling and wants any excuse to do something good. Luci agrees, because he wants a chance to rebel without anyone noticing.
Nicknames!!! Zee calls Lucifer 'Luci' (Lucy) and ,of course, Angel, while Lucifer calls Zirael 'Zee' and 'birdbrain' when telling him he's an idiot.
Features! So I know we get the Angel!Crowley eyes in s2, but i like to think he still has to wear sunglasses cuz when the sun catches his eyes they turn molten gold :]
Zee's eyes go from blue to black, easy enough to pass off as very dark brown. His hair stays the same though, it just never turned darker. He says the sulfur bleached it. Is that true? Probably not.
Zee is very very jumpy, his eyes are always flicking around and he's barely ever relaxed. Luci on the other hand is mostly calm, except when something goes wrong. Then he uses every swear word known to mankind that doesn't involve blasphemy because he doesn't wanna get scolded by head office.
Zee is a lot more flirty than Aziraphale. His time as a demon has taught him some Things™️. He still very persistently believes in the system, though it's easier to pick apart his resolve when you point out that he fell because he thought the system was unfair to Lucifer. Luci is the opposite, not sure how to respond to the flirting and getting very tongue tied (ngk.). He is however very willing to finally cut ties with heaven, which means Paradox. Zee keeps trying to convince Luci to stay in heaven, Luci keeps trying to convince Zee to Go Off Together. Zee terrified of consequences, Luci bored out of his skull with heaven's monotony. The only reason he stays is because he remembers Zee's sacrifice. He knows that Zirael didn't want to fall. He did it so Lucifer wouldn't have to.
This makes the season two finale oh so interesting HEHEHEHHEHGEHGEGEH
Lucifer gets the proposition to return to his position as Supreme Archangel, for things to go back to how they were before he was demoted. He, naturally, tells the Metatron exactly where he could stick it. Zee gets mad about this because Lucifer could make heaven better! He could make the system better, prevent anyone from falling without reason ever again. Luci gets pissed because he's been complaining about heaven to Zee for thousands of years and now that just means nothing??? he should go back?????? because of a broken system? But he doesn't mention that the Metatron told him he could restore Zirael. When he finally yells it out at the end of their arguement, right before the kiss, Zee freezes and stares at him. Lucifer realized. Oh shit. This is the one thing he's wanted more than life on earth for all this time. And i'm refusing him it, although it's my fault he lost it in the first place.
Zee won't ask him to go to heaven if he so clearly doesn't want to, definitely not now. Luci kisses him as an attempt to apologize, it's gentle and Zee doesn't push back but he also doesn't respond. At all. He just turns away and starts organizing his books. Just as Lucifer is about to leave, tears in his eyes, Zee says, very quietly; "If you won't do your job, I'd better start doing mine."
The next day, Lucifer comes back with a whole apology script written. He doesn't find Zee there. Instead he finds a random guy from a bookshop that closed a couple months ago.