Thank you emoaeden, for all your help. I didn't really want it to be a QWOP clone, I just wanted to use that as a reference for how I wanted my character to walk.
But I want the game, where you can mix and match body parts. I want you to be able to eventually use animal parts also.
I kinda wanted it to be like a puzzle where you have to use the body parts given on the map to complete it. A couple of ideas of this would be putting a lot of legs together to make a snake that goes through a tunnel, or multiple arms that can reach far places. So there would be many choices and hard to make separate sprites for all choices. I hope this makes sense.
BTW all the sprites now, probably won't be in the finished game. I'll keep working on trying to get the them to pin to each other. I just noticed that there is a joint option in the physics behavior. I think I'll try and use that instead of of the pin behavior.