At the title screen, press Triangle, Up, Down, Triangle. If you entered the code correctly, an emblem will appear at the top left corner of the screen with the new characters. Weepy and Smiley are playable in all modes except story mode.
At the title screen, press Triangle, Down, Up, Triangle. You will now be able to play different sets of puzzles in all single player modes.
When you choose a character in story mode, you need to note that all the characters are aligned in difficulty order. That means if you're a beginner, you should play as Mog. Or if you're a master, the guy with the red and white face is for you.
Press Start when choosing a character at the selection screen.
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