In the majority of the franchise, Jimmy and Cindy share a huge rivalry in academics and physical abilities. Cindy was the smartest in her class before moving to Retroville, where she met Jimmy and the others. She lives across from Jimmy, whose intelligence put her at second place. Both being too prideful to acknowledge the other's individual skills and knowledge, these two young geniuses both strive to outdo the other. They have a love/hate relationship, due to their criticism and competitiveness toward each other, but secret admiration of each other along with it.