Mary Kom showcased the journey of real-life boxing champion Mary Kom, who goes on to become a six-time world amateur boxing champion. Boxing champion Mary Kom criticised her 2014 biopic, starring Priyanka Chopra, saying it showed only 10 per cent of her struggles and hard work. She believes her autobiography, Unbreakable, offers a. In an interview, Mary Kom ruled out the possibility of her biopic's sequel.