This is so disturbing to look at.  The first image that comes to mind is from the movie Aliens when the alien baby bursts from the chest of their victims.

Imagine:  Aliens five Revenge of the Queen.  In it we find out that the Alien Queen used Ripley to get back at the humans for her demise but this time the alien spawn are a hybrid species which have human faces and murderous alien bodies...

(via Fantasy & Sci-Fi Lovin' News & Reviews)