Paper Child

1. A form a paper craft in which cartoon characters are drawn and cut out in such a way that when photographed with proper arrangement, they appear to be interacting with or subject to the environment around them. They often are but need not be children characters or even human.

This is a more modern, more specific application of "breaking the 4th wall."

also

2. A term for a piece of artwork in this style.

or

3. A character within the piece.