Mary Ryan, better known as Blue Mary, is a prominent character in The King of Fighters series. She is a skilled fighter and former police officer specializing in combat sambo. Blue Mary is known for her calm demeanor, strong sense of justice, and dedication to helping others. Throughout the series, she often investigates criminal organizations and supports her friends in battles. Her complex relationship with Terry Bogard and her tough, independent nature have made her a fan-favorite character in the franchise.