Wednesday is tough, feisty, curious, and stubborn and has a sharp wit and a strong sense of individuality. Like the rest of her family, she shows a great interest in the macabre and frequently challenges conventional norms. She claims to be emotionally detached but shows great concern when those she cares about are injured, as shown when Thing was stabbed. She can also be very vengeful and merciless to those who cross her or the people she cares about, as shown when she receives a vision of someone murdering her friend Enid and becomes hellbent on finding the culprit before they can carry it out. She has a soft spot for her older brother, Dante Addams.

