About the w.d. gaster tag
w.d. gaster is a character tag that NovelAI Diffusion can use. On Danbooru it has 254 posts, and its best-rated still image scores 90. 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 w.d. gaster
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 w.d. gaster in a prompt
Put the subject first, then this tag, then quality tags.
w.d. gaster, solo, best quality, masterpiecewlop, w.d. gaster, 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
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A dummied-out character in Undertale that can normally only be found through very rare events. Information about him is scattered around the various Fun Events, of which only one can be seen per given playthrough without hacking the random Fun Value set at the playthrough's start.
The previous royal scientist who, among other things, created the CORE and fell into "his creation," resulting in him being scattered across time and space and forgotten by almost everyone in the underground. He is also thought to be connected to Sans due to the skull-shaped beam cannons that he wields in his boss fight being named "gasterblaster" within the game's files, and is generally assumed in most speculation to be Sans and Papyrus' older brother or father.
Because any information relevant to him, or even any mention of his name and (former) existence is vague, much of the information circulated about Gaster is conjecture. His appearance is commonly speculated to be that of the mysterious figure who looks similar to Uboa appearing in the grayed-out door of the Fake Hallway event at Fun Value 66.
He is commonly theorized to be the voice speaking to the player at the start of Deltarune, and to be of major importance to its plot.
- !asset #49794214: Assumed appearance
See also
FAQ
Does NovelAI recognize w.d. gaster?
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 w.d. gaster.
How do I write w.d. gaster in a prompt?
Write "w.d. gaster" 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.