Iori and Leona
If you haven't unlock Iori and Leona in kof 97, from the bigining of the game keep the start botton prest do not let go then select advance mode and go left to right for 10 seconds then pres at the same time both of the ponch buttons for Iori and for Leona up and down for 10 seconds and both of the kick buttons

Fight Original Iory
In The King Of Fighters 97 beat Orochi with kyo's team but defeat him with kyo 2 face Iory after Orochi (in any difficulty level and either advance/extra)