papa bunayin sparks joy; do u have any other headcanons revolving around this au youd b okay sharing? :o
I have a LOT of headcanons and ideas in the tag, but... hm.
The original AU was started off way back when, and it was (as I've said) just that Ayin had figured out how to shapeshift, and he'd managed to become a black rabbit.
From there, I figured that it was something anyone could do as long as they were made of the Light, so any of the Librarians (potentially excluding Angela, definitely excluding Roland). Chesed would be a cat, I think Hod is a mouse, Yesod's an actual snake, and Binah was something small like a bat maybe.
Every so often I want to go back to that version, because it's cute and has more space to fit into canon than the subsequent "help, my manager is a rabbit" version.
That one was started by someone(?) who didn't know about the original, and just assumed that Ayin's always been a rabbit, or has been for a very long time.
I think I came up with the idea that Ayin's in the shape of a rabbit because of an early implementation of psychoment, somehow; his true, human body is still somewhere in the City, potentially having been kept cryogenically frozen in stasis in the Facility, or somewhere else deemed safe enough by Benjamin.
Since then? Whenever that happened? He's been in bunny form. Shape of a bunny, approximately... I'd say larger than a lap rabbit, but not massively giant. He's capable of talking and still retains all of his intelligence as a human, and his still present connection to his body is why the Head hasn't hunted him down. That said... he has started gaining a few more rabbit-like behaviours, like the grooming habits, haha.
The story is basically exactly the same, except... Ayin is rabbit-shaped.
Ayin gets Benjamin to help him do a lot more things before the Faciliy is ready, because paws aren't great for making things, but I think that later on once he's already got L Corp permissions, he'd manage to get prosthetics (as in, special equipment) to help him build the robots, Angela included.
The Facility and the methods of management in the loops are geared around a rabbit body being able to perform those tasks.
I think that once in the Light, he probably would have appeared to have his normal human body, but... if/when taken out of the Light again, he goes back to being a rabbit. His body is, after all, already in existence somewhere!
I also had thoughts of Dante being a black rabbit with (somehow) a clock head where the flames burst up into two spurts like rabbit ears. Their identity as the former Director of L Corp is pretty much the worst kept secret in the City, since there's only one person who's gone around as a rabbit and not had the Head sic'd on him.
One of the major reasons I see Ayin as a rabbit is because, aside from the fact that they're prey animals and it feels like Ayin fits that more than being a predator (given how easy it is for him to die or go mad from the Abnormalities, and how he doesn't seem to be a fighter) - but also... I made my FFXIV alt, the origin of the crossover, a Viera. That is to say, he has bunny ears!
I honestly can't remember which came first, seeing him as a rabbit or picking Viera for him.
(The Summoner's coat he's wearing here is meant to be green; a friend was amazing and helped me get it dyable. The bird looks exactly like that but I added the red.)