Chizuru is a nun from the Yata clan. She secretly created the King of Fighters tournament to gather the descendants of the other two clans, in order to seal Orochi once again.

Andy is the younger brother of Terry Bogard. He came to Japan to pursue the Shiranui-ryuu Ninjutsu martial art to avenge his adoptive father.

Athena was originally a high school student and an idol, but she accidentally discovered that she has superpowers.

Yuri is a lively young girl with a special love for sweets. She always wants to participate in the King of Fighters tournaments to prove herself and protect her family.

Mai Shiranui is one of the most skilled female ninjas. With her seductive appearance, Mai is also a dreamer who always wishes to marry Andy Bogard.

K is a clone carrying the DNA of Kyo Kusanagi, belonging to the NESTS organization. He always strives to prove himself stronger and refuses to accept being Kyo's clone.

Orochi is a supernatural entity. When humanity began to destroy nature, Orochi sought to exterminate mankind but was later sealed away by the Three Sacred Treasures.