>>7679801Why not use something like pic related? I broke down one of those bootleg Figma drawing figures to see how they work and I'm pretty sure all figmas use these in their crotch.
Not only is it a big space saver but it allows the crotch to sit on top of the legs, meaning it naturally twists and rotates as you move the legs. As long as you have a thick enough waist to keep it riding up too far i'd say it's the best option.