The one in the back left is demonstrating that it can snap its own bones whilst staring at the photographer. Given that there’s no photographer, you are its focus. The eyes are visible through the mask’s lenses, broad black pits empty of expression. It’s big. Larger than the rest and hunched to hide it. When given the the chance to explain its definition of beauty, AI tells you that it considers the soul optional and to personally take that as a threat.
Also, there’s a joke to be made about a cup of mud.