J is most accurately characterized as a "lethal workaholic" due to her unwavering commitment to her occupation. Furthermore, she employs corporate jargon such as "synergistic liability" and "fourth quarter profits" as vulgarity or slander. Despite the fact that J is not as sadistic and insane as V, she does have a negative attitude toward those who are not as excellent as her. This is most evident in J's relationship with N, where she expresses her hatred for him and declares that she would personally murder him if their company permitted it. J's animosity toward N is so intense that he infects him with a virus as soon as he begins to query the company, despite the fact that there was a legitimate reason for doing so. Additionally, he derives pleasure from committing such an act.

J is also arrogant and prideful, as she derives pleasure from disparaging others. This ultimately led to her downfall, as she delayed concluding her monologue after incapacitating Uzi, which allowed Uzi to use her Nanite tail to wound J. Despite this, J praises her companions if they are worthy. This is shown when N supposedly gets past the Worker Drones' doors and, despite her low opinion of him, J sincerely congratulates his efforts and rewards him with the thought of having a JCJenson-branded pen, an item they both consider an accomplishment.

Despite her arrogance, J is not incapable of displaying fear. This is demonstrated in N's memories of when they used to be Worker Drones working at the Elliott Manor, where being in the presence of Louisa is enough to terrify her, as well as when Lizzy, Thad and Khan appear to attack her with a railgun, making her systems warn her of a "Prior Hazard" as her face bears an unnerved expression. However, she has a positive relationship with Tessa, whom J is sincerely kind and respectful towards