She had a very relaxed, upbeat, and cheerful personality, and tends to display a lack of lady-like manners, often seen shoving Tatsumi into her breasts, putting her feet on the table, or consuming large amounts of sake and other alcoholic drinks. She serves as a sort of big sister figure to Tatsumi and the younger members in Night Raid. 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.