Mary Saotome is a prominent character in the anime series Kakegurui. She is a second-year student at Hyakkaou Private Academy, known for her sharp wit and competitive nature. Initially introduced as one of the antagonists, Mary is a skilled gambler with a strategic mind, often challenging and testing the main character, Yumeko Jabami. Despite her abrasive demeanor, she eventually becomes an ally to Yumeko, showcasing her complex personality and growth throughout the series. Her character development highlights themes of rivalry, friendship, and personal transformation in the high-stakes world of gambling.