As a Nobody, Zexion appears as a calm and collected individual that shows little emotions, although he is sometimes seen smirking or grinning. Unlike the other Organization XIII members, he conducts his tasks in a veil of secrecy, suggesting an enigmatic sort of persona. Zexion also holds a fondness for literature and the humanities, which is noticed in the weapons he utilizes and his manner of speech when speaking to other members. Zexion has an undying sense of duty to the Organization, and goes to almost any length to ensure the success of his missions. At times, he can also be humorous and jest with the other members when the moment shows itself.