Hyper Speed
At the Game Start screen, hold down Y. While holding, hit L, L, R,
Down, Left, and R. You'll hear a beep. At the Options screen, and
you can now raise the speed to 10.
Hidden Characters
At the Game Start screen, hit these buttons to find hidden characters:
Jack: Hold Up and hit X, A, R, R, Y, and A.
Sarge: Hold X and hit L, L, Up, Down, Left, and Down.
Thunder: Hold Up-Toward and hit Y, B, X, B, B, X, and A.
Peelgood: Hold Down-Away and hit B, Y, Y, A, and Y.
Butch: Hold L and hit X, R, A, X, R, and R.
Ice: Hold B and hit Up, L, L, L, and Right.
Slyck: Hold Y and hit L, L, Up, L, Left, and R.
Spike: Hold R and hit X, B, B, A, Y, Left, and A.
Random Select
At the Character Select screen, simultaneously hit R and L. The computer
will choose your fighters.