​Cornelius is generally fairly grumpy, often snapping at people who are too loud or bubbly. They have a quiet rebellious spirit. Cornelius won't defy an adult outright, but instead will wait till they turn around to put a tack on their chair or hide the drink they were saving. Corn prefers to be left alone, very rarely making friends. However when Cornelius does make friends, they will stick close to these friends, both metaphorically and literally.