As seen in the film, Giulia Marcovaldo is a spunky, energetic, young girl who's hell bent on on taking Ercole Visconti down, and has a bit of reputation of being "too much", in her own words. Even with all this, she' genuinely caring and supportive to her friends. In this role, you will heavily be exploring this supportive aspect to her personality as she helps Luca and Alberto throughout the comic.
Voice Reference: https://www.youtube.com/watch?v=Ao_actL3_8A