Luke Dunphy
Luke and Haley have a lot in common. He’s not “ditzy” by any means, but his intelligence is constantly questioned throughout the show’s run. Luke is an innocent boy and teenager who has a lot in common with his dad. In fact, the two often concoct ridiculous plans together, which usually ends up blowing up in their faces.
Luke and Manny (Jay’s stepson and Luke’s step-uncle (?)) are in the same grade but didn’t have a lot in common at the start of the show. However, in the first season, after getting into a physical altercation, which involved Luke sitting on Manny’s chest, the two sort out their differences and become the best of friends.