Mary Ryan (マリー・ライアン, Marī Raian), better known as Blue Mary (ブルー・マリー, Burū Marī), is a fictional character in SNK's Fatal Fury and The King of Fighters series. She made her first appearance in Fatal Fury 3: Road to the Final Victory which introduced her as a special agent who investigates two criminals known as the Jin Brothers while also meeting Terry Bogard, becoming a love interest to him. She then later joins the cast of The King of Fighters starting with The King of Fighters '97, and has appeared in several consecutive games while changing teams over time. Blue Mary has also appeared in the twenty-minute featurette Memories of Stray Wolves took place before the event of Fatal Fury series' last mainline game, Garou Mark of the Wolves.