Mato Kuroi is the central protagonist of the anime series Black Rock Shooter. A cheerful and energetic middle school student, Mato is characterized by her short black hair and blue eyes. She forms a strong bond with her classmate, Yomi Takanashi. Mato's curiosity and determination lead her into an alternate dimension where she becomes Black Rock Shooter, a mysterious warrior with a blazing blue eye and a powerful cannon. Her role is pivotal as she battles inner conflicts and external adversaries to protect her friends and uncover the truth about the parallel world.