Niang San (三娘) is a fictional character and one of the official mascots of Bilibili, a popular Chinese video sharing website. Often referred to as '33 Niang,' she is depicted as a cheerful and energetic young girl, symbolizing creativity and the vibrant community of Bilibili. As a mascot, Niang San frequently appears in promotional materials, events, and collaborations, serving as a representative figure for the brand. Her playful personality and iconic design have made her beloved among Bilibili’s userbase.