I don't believe I am responding to my own post, but I tried it. 009000 does do one thing. It locks up the Ultimate Kombat Kode screen so you cannot enter the code. If you allready did the code, reset your game, and leave Smoke hidden. Then start a 2 Player game and enter the VS Screen Code of 009000, and then loose, and loose a one player game too. You will go directly to the Game Over Screen without going to enter the UKK. You cannot even do a circle on the controller for it to pop up either. This code locks it all up! If you do enter the code, you must do the Cheat Menu Code to access Smoke. But that is what it does. Once again this is the Playstation's Mortal Kombat 3.
