Mary Ryan (マリー・ライアン), better known as Blue Mary (ブルー・マリー), is a character from both the Fatal Fury and The King of Fighters series. Her first appearance was in Fatal Fury 3 as a private detective. Her official nickname is "S Class Woman" (Sエスクラスの女おんな)., and in The King of Fighters XV, is "The Joint Crusher" (JOINTジョイント CRUSHERクラッシャー).