For this password, instead of using the "_" as a space, always use the FORWARD command. Also, after entering the password, you have to press and hold Start on the 1st controller, Left on the 2nd controller and then the A button on both controllers at the Vegas intro screen. Make sure the picture of Vegas has finished moving before pressing the buttons. Continue to hold the buttons as the game starts and you'll be taken directly to the debug menu.
These start you off at differing starting people, with the correct amount of money to have $1000000 to face king with, when you're done beating them
Enter the Japanese syllables below as your name for the named effects. Remember, on the "END" option, hold Start and press A to enable the effects.
Enter the following at the Saved Game password screen.