>>55142766Its not just that Lucario is flexible, its that Lopunny are also so inflexible. Lucario has a fairly simple body really, it has all the pieces of what a normal character would. But Lopunny is all weird.
It has a tear drop body shape with no shoulders or chest that make any kind of breast or upper body outfits not work properly. It has odd doll like leg joints that make any leg like anatomy difficult and most clothes are odd too. There's also the popeye arms and the lack of feet too.
Essentially to make a Lopunny look normal enough to be able to fit into a variety of regular stuff, it already would need a ton of parts of it changed to be compatible. I'd like Lucario artists can look at the source and go I want to draw that, but Lopunny artists look at other peoples fan art and go I want to draw that fan art.