Cagliostro is a legendary alchemist in the Granblue Fantasy universe, known for her genius intellect, playful personality, and mastery over alchemical arts. Despite her youthful appearance, she is centuries old, having transferred her consciousness into a new body to achieve immortality. As one of the original founders of alchemy, she is both revered and feared. Cagliostro joins the main crew, offering her expertise in magic and often stirring up mischief, while helping the group on their journey.