Since NovelAI's image generator is fine tuned using Danbooru images and tags, I wanted to see which ones it is able to reproduce. I went to the Danbooru wiki and extracted all the different face tags listed.
Some results were filtered out, mostly the NSFW ones and tags that doesn't give any satisfying results.
All of these images were generated in one single batch. I chose a prompt which is very locked down with a lot of parameters to create a character that is as similar as possible across different generations, only with different expressions.
{______}, young woman, black hoodie, blonde hair, blue eyes, neutral background, 1girl, solo, masterpiece portrait
Model used is NAI Diffusion Anime (Full), Steps 28, Scale 11, Quality Tags On, Seed 57465133, Undesired Content Low Quality + Bad Anatomy.
NovelAI doesn't care about uppercase and lowercase when generating. The output from Danbooru is all lowercase. To make it more readable I've used Title Case On All Images. This means that roman numerals will look a bit weird. But it will not influence generations of your own images.
A lot of the tags here look strange and weird and “Wrong”, this is not as much due to the model as it has to do with the fact that some tags just don’t work with some seeds. The idea with this list is not to show which tags look good or not, since that’s heavily seed dependent, but rather if they’re reproducible at all.