It's a "randomly" generated avatar from the original model on https://make.girls.moe/.

I say "randomly" because it really wasn't random. I tinkered around in an image editor for a bit to create a seed that was anything but random, to give me a result that I was happy with; a nice clean image of a character that looked androgynous.

And really, hacking up a source of randomness to be distinctly non-random to give me a perfectly desired result is totally in character for me, isn't it?