Hyacine Fontaine is a character in the game Honkai: Star Rail. As the Chief Justice of Penacony, Hyacine is known for her sharp intellect, unwavering sense of justice, and commanding presence. She plays a pivotal role in the storyline, overseeing the legal and social order of the region. Her decisions and actions often influence the fate of other characters, making her a central figure within the narrative and a symbol of authority and fairness in the game's universe.