Dragonball Z Ultimate Battle 22
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Ultimate Battle 27 Mode: At the title screen after the FMV sequence, press Up, Triangle, Down, X, Left, L1, Right, R1. If you entered it correctly you should hear a chime kind of sound.  Another FMV sequence will take place, followed by the title screen that says "Ultimate Battle 27," which allows you to have 5 more characters.
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