These two good-looking characters are made from composites of other pictures. It's been known for some time that, if many people's faces are collected into a composite, the result is a more attractive face. This woman's face is a combination of 64 real pictures of women, and the man's face is a combination of 32 real pictures of men. The research site where you can find these two also has information about an ongoing experiment meant to test the preferred body type for women, as well as a composite of the faces of Miss Germany contestants.
Via Beauty Check.