For specific character data and advanced strategies, you can consult these repositories:
The first character you select is designated the Leader (indicated by a blue health bar). Only the Leader can perform a Leader Desperation Move (LDM) , which typically costs two stocks. The King of Fighters 2003
GameFAQs Guide Collection : Comprehensive move lists by Moriya and AzulFria . For specific character data and advanced strategies, you
On console versions, defeat them in Arcade Mode to make them playable. The King of Fighters 2003
The final boss you face depends on how you defeat in the middle of the game: Adelheid Bernstein: Defeat Kusanagi with a standard move. Mukai: Defeat Kusanagi with a Desperation Move. Unlock Method Kusanagi