Choose a winning pose: After a victory, hold A, B, C, or D to choose a pose.
Play Kusanagi: At the character select, go on Kyo and enter: up, down, right, left, down, up, left, right and A.
Play Omega Rugal: In the black slot on the left of Yashiro, you can select Rugal.
Play Orochi Team: Go on Yashiro, Shermie or Chris and hold START. Orochi versions then appear.
Play Orochi Leona: During a game with Leona, enter up, down, up, down, up, down, B+D.