User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-184.76.116.24-20120906185036/@comment-83.165.23.90-20120906190136

Einh? No, monsters in MonHan can't wear armors naturally... i can't figure that monster coming out of an egg with armor included, it is biologically impossible.

In my opinion, these "wings" are a mix between wing and arm. They have these membranes, but have claws too. These "wings" are not useful for flying, so Goa simply puts them in his back. Maybe it can help him to move when running. And this is why he has claws on his back.

That's my theory.