J. K. Rowling is a renowned British author best known for the Harry Potter series, which has sold over 600 million copies globally. She is also a philanthropist, co-founding the charity Lumos.
This is based on winning 79 head-to-head matchups with other famous people, but also losing 23 head-to-head matchups.
Most recently J. K. Rowling lost a matchup to Julie Andrews (#570) voted by someone from United States.