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About the leviathan (umineko) tag
leviathan (umineko) is a character tag that NovelAI Diffusion can use. On Danbooru it has 265 posts, and its best-rated still image scores 99. 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 leviathan (umineko)
Follows composition and expression instructions closely, so the effect shows in a tidy form.
Reacts to the tag more strongly, so its effect is easier to see.
WAI illustrious SDXL v17, a local model. Shows how the same tag reads outside NovelAI.
Writing leviathan (umineko) in a prompt
Put the subject first, then this tag, then quality tags.
leviathan (umineko), solo, best quality, masterpiecewlop, leviathan (umineko), soloThe 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
One of Umineko no Naku Koro Ni's Seven Stakes of Purgatory, and representative of the deadly sin of envy. Second oldest (even if she doesn't often act it), with the only wholly unnatural hair color (green) of the Stake Sisters. Since all the sisters have red irises, perhaps the closest she can get to being the green-eyed monster is to be the green-haired monster.
The human she is based on is Lenon.
Named after Leviathan, a Biblical demon/sea monster.
FAQ
Does NovelAI recognize leviathan (umineko)?
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 leviathan (umineko).
How do I write leviathan (umineko) in a prompt?
Write "leviathan (umineko)" near the front of the prompt and separate it from other tags with commas.
Should I use V5 or V4.5?
V4.5 shows the tag's effect more strongly. V5 gives steadier images with fewer artifacts.