I intended to use one for some tabletop stuff among friends. That means I intentionally left holes to fill. I never specified how many cities survived the curse, leadership positions have plenty of gaps, magic runs on shonen anime logic, the world has warped animals so you can make your own, ect.

The one I went with was "flames of fire". Vague enough to add some other features like wings around it, but still technically accurate.

There is a "many-eyed wheel within wheels" one, but he's depicted as a more cutesy version of that. They can all choose their outward appearance.

I'll focus on one. Xiel holds his fellow angels to a higher standard. When miracles go wrong and mortals wind up in danger, he'll be grouchy but understanding. Just own up to the mistake. But if you play high-and-mighty after screwing up, his human shell sheds and he goes biblically accurate.