This is Nana! They're like one of those shitty anime plushies you see occasionally. The ones that look only vaguely similar to their source material and are super clunky and frumpy. Those!
Except Nana, of course, isn't just a plush. They're actually a full on god- powers and everything. It just seems that they're stuck in this form at the moment. They have a normal form, and could easily go back to normal if they wanted to, but they seem to think that this predicament is too amusing to them to change it. It also makes it easier for them to unnerve people. Sometimes being all big and scary gets old, after all. Despite their somewhat cute appearance in this form, they're still just as spiteful and vindictive. They want to watch you fail and suffer. Slowly!
Also, they don't have the other two wings to make them symmetrical. They never actually had them to begin with, but people tend to think that something had happened to them. They didn't, however, always have the holes in their wings. That's a new development

The text on their image says:

"Can move - just floats around
Death god stuck as a plush
People just think they're a haunted doll"