Diesel is the cheerful and caring leader of the Infinity Rail squad. Known for her sunny disposition and nurturing nature, she always carries strawberry candies and guides lost passengers. Despite her dream of being a pop star, she's tone-deaf. Diesel's past is marked by a tragic bombing at AFX, which claimed her life and her younger brother's. Now a Nikke, she dedicates herself to her squad and duties. Stylish and elegant, Diesel's personality shines through her professional and chic attire.