Hell's Cat is a series of sofubi (soft vinyl) figures created by Grape Brain. The character, Onigiri, is an anthropomorphic cat with exaggerated features like oversized hands and expressive eyes. It blends cute and creepy elements, making it stand out in the designer toy scene. The figures are produced in limited runs, often featuring different color variants, including glow-in-the-dark and translucent editions. Hell's Cat has gained popularity due to its distinctive design and its appeal among collectors of designer toys.