Latent Chimera - CivArchive (CivitAI Archive)

Latent Chimera - v1.8L

NSFW

Latent Chimera is an Illustrious based model with an emphasis on semi-realism.

Switching to Forge improved memory management significantly, making SDXL models more practical. After exploring various models, I decided to merge my favorites to experiment with new possibilities. Latent Chimera has non-Illustrious SDXL models mixed back in to boost creativity and reduce overfitting.

This model is the result of combining multiple sources using the SuperMerger extension for A1111. Through methods such as MBW, cosine interpolation, and static weight blending, I aimed to produce a composition distinct enough to warrant sharing—an outcome shaped by ongoing experimentation with merge strategies.

All source model licenses were reviewed prior to merging, and the most permissive terms available under the inherited usage conditions were applied. Merge recipes are included in metadata. VAE has been baked in.

Reality Check

This isn’t intended as a flagship model. My aim here isn’t to drop a “top-tier” release, but to explore merge behavior, stylistic bias, and scene composition in a controlled way. I avoid rushing merges right after donor model releases, both out of respect for the creators and to keep the focus on understanding mechanics—not chasing hype. Most of my excessively long prompts are reused across tests so I can compare bias and behavior between models; while I still make occasional adjustments, I generally post results as they come—flaws, quirks, and all.

Description

Latent Chimera 1.8 Changelog

LoRAs Used

Body / Proportion Bias

R3trouss3_br3asts
Breasts_size_sliderIllustriousXL3
Breast Size Slider - Illustrious_alpha1.0_rank4_noxattn_last
Waist Size Slider
Ass Size Slider
thigh_gap
head_size_slider3

Body and proportion descriptors resolve more consistently into mature adult ranges across normal prompt variation.

Clothing Bias

Clothed Slider_alpha1.0_rank4_noxattn_last

Increases likelihood of clothing when not explicitly prompted otherwise.

Freckle Bias

Freckles Slider_alpha1.0_rank4_noxattn_last

Reduces freckle intensity.

Eye Bias

black_eyes2
pupil_size_slider
narrowed_eyes_slider

Reduces dark/black eye bias and squinty-eye bias. Stabilizes eye appearance.

CyberRealistic Merge

Latent_Chimera.vae.fp16 x (1-alpha) + cyberrealisticXL_v100.vae.fp16 x alpha

Alpha vector:

(0.0,0.0,0.0,0.0,0.0625,0.0625,0.125,0.125,0.125,0.1875,0.1875,0.25,0.1875,0.3125,0.3125,0.375,0.4375,0.5,0.5,0.4375,0.375)

Method:

Weight sum: A*(1-alpha)+B*alpha

Known Limitations

Character Gender Bias
- Male characters may require stronger or more explicit prompting to generate reliably.
- This is a known limitation of the current merge.
Clothing / Anatomy Interaction
- Some generations may show unintended anatomy definition through clothing, especially around fitted shirts/tops.
- Recommended mitigation: use the negative prompt to reduce unwanted visibility or excessive fabric cling.