Aqua shows some similarities to Kairi, which she shows by making good luck charms for her friends. She also has a devotion to her friends similar to that of Sora's, for she did everything in her power to protect Ventus from harm and even sacrificed herself to save Terra. She is also similar to Sora in that she holds a strong sense of justice and desire to do what is right. Her judgments between what is right and wrong are never misplaced. Her personality is serious, kind, strong willed, intelligent, and responsible, as she is the most reliable of the three.

She is always worrying about Terra and Ventus, who are two of her closest friends. She has been shown to be blushing and embarrassed when Zack asks her to a date, shaking her head and arms in an attempt to compose herself. She seems rather modest, as despite becoming a master already, she still referred to herself as a trainee.

She never strayed from the path of light and her actions were all selfless and intended to help her friends, and to free the worlds from sinister forces.