Go into Options, then hold L1 + L2 + R1 + R2, until you hear a
boom and the screen will shake. Now, the "?" is selectable.
Play as Classic Characters
At the character select screen, highlight Rayden, Jax, Kano, or
Kung Lao and Select.
Play as Chameleon
Go to Human Smoke and hold Left + R1 + R2 + Triangle + Sqaure.
When the round starts, Human Smoke will become Chameleon.
Go to the character select screen and highlight Sonya, press Up +
At the Story screen, press Down, Down, Up, Up, Right, Right,