Nolan Gould grew up in front of our eyes as the actor who plays Luke, the dumbest character on the hit television series "Modern Family". The youngest member of the Dunphy family is known for saying dumb things and getting himself into trouble. Ironically, Gould is also one of the most intelligent people on set, despite his young age. He graduated high school at just 13 years old and is a member of Mensa. Gould actually says that he enjoys playing the character because it's fun and allows him to enjoy just being a kid.