Ash Crimson is a central character in The King of Fighters series, first introduced in The King of Fighters 2003. He is known for his androgynous appearance, enigmatic personality, and distinctive green flames. Ash is the leader of the Hero Team and plays a key role in the Ash Saga, acting as both a protagonist and anti-hero. His complex motives and actions drive much of the storyline, particularly through his quest involving the powers of the Sacred Treasures.