Biscuit has a devious personality. She tends to use her cutesy appearance and demeanor to her advantage, whether for gathering information, getting what she wants, or acting innocent and helpless in combat to deceive her opponents. She jokingly said that if someone insists on using an honorific, they must call her -chama (-chan + -sama). Though in the beginning she was out to destroy Gon and Killua's friendship for fun, at the end of Greed Island, she acknowledges that she is close to developing