@Cirrus Light
Yep, that’s Limey Daze - she’s the default-default avatar. The system generates the avatars using the displayed name (either your username or background pony ID) as a seed. If the system does not pass on any name to the OC generator at all though, Limey is what it outputs by default.
So in essence, she’s the most default avatar on the site right now, since the OC generator is the “default avatar”, and she’s the “default” of the generator.
As for why she appears on the preview screen - if you notice the preview just says “background pony” as a name, without a background pony idea. It doesn’t calculate the ID at that point, so it has nothing to pass on to the OC generator, so it gets Limey Daze in return.
Fixing that would require modifying how the previews are generated, and to be quite honest, I kinda like her. She’s like a little easter egg now :)
@Background Pony #10F9
I really appreciate that, thank you :D