Ninny is fairly abrasive, rude, and temperamental, as demonstrated when she loudly berated two repairmen for not finishing their reconstruction of the Western Branch gate fast enough despite having told them to prioritize the installation of a large monitor to display her latest product advertisement.[4] She is very insistent on Noel not referring to her as "Ninii-chan" since she is her elder,[5] and constantly criticizes her obsession with Japanese culture due to her not actually being Japanese