Anatomical slider LoRA extends Illustrious XL and Pony model control
A new LoRA adapter for Illustrious XL and Pony-based models adds slider-based anatomical control, released under OpenRAIL++ license.
Muapi released a LoRA adapter this week that adds slider-based control for male anatomy sizing in Illustrious XL and Pony-derived image models. The adapter, published on HuggingFace under the model name penis-size-slider-pony-illustrious, targets the Illustrious XL early-release checkpoint from OnomaAI Research and works with Pony-based fine-tunes.
The LoRA uses the text-to-image pipeline and ships with a Diffusers-compatible config. It's licensed under OpenRAIL++, the permissive open-source license common in the Stable Diffusion ecosystem. The model card shows zero downloads and zero likes, indicating a very recent release.
Slider LoRA mechanics
Slider LoRAs function by training a low-rank adapter on paired images that isolate a single attribute — in this case, anatomical scale. At inference time, users adjust a weight parameter (typically -2.0 to +2.0) to shift the output along that axis. The technique has been applied to age, body type, lighting, and art style; this release extends it to explicit anatomical features.
Illustrious XL is an open-weight SDXL fine-tune optimized for anime and stylized character work. Pony models share a similar lineage. Both run locally in ComfyUI, Automatic1111, and Forge without server-side safety enforcement, making them popular bases for uncensored LoRA development. The adapter is available at huggingface.co/Muapi/penis-size-slider-pony-illustrious.
