How would you rig whatever is in the stable diffusion generated image automatically? You'd have to find a way to identify the objects in the image, segment them into their individual limbs/pieces and rig and animate them.

Maybe Meta's open source segmentation tool would be handy. Maybe you can rig the person/animal/object in the image using one of the object detection tools on HuggingFace.

This seems like a really interesting project. I'd love to check it out if you plan on open sourcing it!