She is cheerful and has fierce determination when she sets her mind to it, however she is quite violent when using her "Stone Free" Stand, despite that she has honorable morals and acts selflessly, she acts like a delinquent teenager without committing any serious crimes, besides being a bit vindictive and tomboyish, Jolyne is quite resourceful when fighting as she watches, plans and adapts, she loves her friends along with her family so she would give her life for them.