About the nullken tag
nullken is an artist tag that NovelAI Diffusion can use. On Danbooru it has 184 posts, and its best-rated still image scores 98. The samples above put the tag at the front of a fixed base prompt with seed 1234, so the differences between tags come from the tag alone.
How each model draws nullken
Follows pose and expression instructions closely. Good for clean standing portraits.
Picks up face shape, line and palette more strongly. Good when you want the style to lead.
WAI illustrious SDXL v17, a local model. Shows how the same tag reads outside NovelAI.
Writing nullken in a prompt
Put the artist tag near the front, then add the subject and quality tags.
nullken, 1girl, solo, best quality, masterpiecenullken, hatsune miku, 1girlnullken, akisaka yamoka, 1girlThe mix example uses akisaka yamoka, the closest style on this site. The negative prompt and the full settings are on the terms page.
How these samples were made
Every image uses 832×1216, seed 1234, 23 steps and the k_euler_ancestral sampler. The base prompt and negative prompt stay the same for every tag, and only the tag under test changes. Images flagged by the NSFW check are regenerated with a new seed or hidden.
From the Danbooru wiki
Artist.
Japanese name: ぬるけん Circle: ぷちえご!
See also
- Home page: http://nullken.net/index/
- Pixiv Account: http://www.pixiv.net/member.php?id=3357
FAQ
Does NovelAI recognize nullken?
Compare the samples on this page. Every tag on this site shares the same seed and base prompt, so any change you see comes from nullken.
How do I write nullken in a prompt?
Write "nullken" near the front of the prompt and separate it from other tags with commas.
Which artists draw in a similar style to nullken?
akisaka yamoka, yuuma (skirthike), alpha (yukai na nakamatachi) are the closest on this site, judged from the V4.5 samples.
Should I use V5 or V4.5?
V4.5 gives a stronger nullken look. V5 gives steadier poses and fewer artifacts.

