She had a very relaxed, upbeat, and cheerful personality, and tends to display a lack of lady-like manners. She serves as a sort of big sister figure to Tatsumi and the younger members in Night Raid, often referring to herself as "Onee-san" or "Big Sis". Despite the morally-dodgy nature that she sometimes displayed, Leone is not one to tolerate injustice and can be especially vicious to those who commit the vilest of acts. She also enjoyed fighting her enemies a lot she needs to change her habit