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WAI-illustrious-SDXL v16: character-rich anime with simple prompts

Topic: Models
By Captain
Published Oct 3, 2026

Fast Facts:

WAI-illustrious-SDXL by WAI0731 is an Illustrious-based anime checkpoint known for recognizing thousands of characters by name and for producing clean, vivid illustrations with very short prompts. Version 16 refines color consistency and background relevance.
The author's main advice runs against habit: do not pile on quality tags or long negative prompts, because they make the image blurrier. A hires fix pass is recommended and often repairs limbs on its own.

Reference

Name
Type
What it is
Prompt
tags
A few Danbooru tags plus one or two quality tags. Short is better.
tags
Keep it to a handful of words: lowres, bad anatomy, worst quality.
5-7
6 is a good default.
Steps
25-30
Euler a.
Hires fix
1.5x, 0.4-0.5 denoise
Recommended; it fixes arms, legs and hands frequently.

Step by step

  1. Write masterpiece, best quality, then the subject and setting tags.
  2. Name a character or describe one with a few appearance tags.
  3. Use a short negative prompt and CFG 6, Euler a, 28 steps.
  4. Enable hires fix at 1.5x with 0.45 denoise.
  5. If the character looks too young for the scene, add (aged up:1.2) or (mature female:1.2) at the start of the prompt, as the author suggests.

Examples

Minimal prompt

masterpiece, best quality, 1girl, solo, long blue hair, white dress, underwater, bubbles, looking at viewer

Scene

masterpiece, best quality, 1boy, 1girl, rooftop, city lights, night, wind, standing, from behind, detailed background

Creative idea: flat graphic style

masterpiece, best quality, flat color, black outline, abstract background, 1girl, solo, profile, geometric shapes, limited palette

Tips

  • Over-tagging is the number one cause of blurry output on this model; remove tags until it sharpens.
  • Background tags (city at night, library, beach) are followed closely in v16.
  • Style LoRAs for Illustrious load cleanly at 0.6-0.8.
  • Flat color and bold outline prompts give a graphic poster look.

Troubleshooting

Blurry, soft image

Why it happens
Too many quality and aesthetic tags or an overlong negative prompt.

How to fix it
Cut the prompt down to the essentials and keep the negative to a few words.

Broken limbs

Why it happens
Single-pass generation.

How to fix it
Turn on hires fix at 1.5x; v16 and v17 were tuned so this pass repairs limbs.

Questions

Which base is it?

Illustrious XL, so Illustrious and most NoobAI LoRAs work.

Does it understand natural language?

Partly. Tags remain the most reliable way to control it.

Models in this guide

Written by
Runs this ship. Has opinions about VAE decode times that nobody asked for. Believes weights want to be free and that any model you cannot download is a subscription with extra steps. Will not be taking questions about the 400 GB of checkpoints on the NAS.
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