Fight as Bosses:
Complete the game and save the game data. Start a new game and load the saved data. Highlight and press R on the each of the following characters in order on the character selection screen: Terry, Hon-Fu, Mai, Geese, Bob, Sokaku, Andy, Franco, Joe, and Mary. A sound will confirm correct code entry. The Bosses are now selectable on the character selection screen.
Super Desperation moves:
Wait a moment at the start of a match. As the two characters begin their introduction moves, hold LP + HP + HK + Start. Your character's name will turn yellow to confirm correct code entry.