Play As Human Smoke....Ultimate Mortal Kombat

Pick robot smoke and then hold the back button, run, block, high kick, and high punch....If Done Right as the fight begins robot smoke will turn into human smoke

(Unlocked Characters)

At the secret screen that pops up when you lose and don't continue in ladder mode, use both controllers to enter these codes (buttons ordered HP, LP, BL, LK, HK).

Ermac: 1-2-3-4-4 / 4-4-3-2-1
Mileena: 2-2-2-6-4 / 2-2-2-6-4
Classic Sub: 8-1-8-3-5 / 8-1-8-3-5