Got hecka inspired to do an Undyne drawing after listening to this kickass metal cover of Battle Against a True Hero: https://www.youtube.com/watch?v=pJzxHdXHqMA
Nice redraws on these comic covers. I have issues, though. I agree that looking like you have no internal organs, or that your back bone is made of rubber is pretty bad, but comic book artists have to ensure that covers are as appealing as possible to entice new readers to pickup their issues. The problem I have with some of your redraws is that, for some of them, everything looks too static and undynamic. Sure, they're anatomically correct, but sometimes, you have to skew bodies to sell.