J is best described as a "lethal workaholic", given that she is incredibly dedicated to her job, although she is not as sadistic and insane as V is. She looks down on others who are not as good at their designated task. This is best shown with her relationship with N, as she despises him and tells him that she would kill him if their company allowed it. Her dislike of N goes as far as to infect him with a virus when learning that he wants to rebel against their company and what they stand for.