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After unlocking Shanks and Mihawk, successfully complete the entire move set for all The Straw Hat Pirates in Training mode to unlock a third costume for them inspired by the Color Walk books. After unlocking the third Straw Hat costumes, successfully complete Grand Battle thirty times or Event Battle six times, with each of the Straw Hat crew to unlock a fourth alternate costume.

Unlock all the characters to get a new title screen that features everyone.

Successfully complete Event Mode with Mihawk on the hard difficulty setting to unlock the "BMG Select" at the "Treasures" menu.

At the "Press Start" screen, hold R, then press Left, A, Right, X, Y, Left, Right, B to unlock Chopper's fourth costume.

Win the Davy Back Fight min-game the indicated amount of times to unlock the corresponding bonus:

Groggy Ring: 4 times
Donut Race: 10 times
Crash Rush Boxer (the box breaking): 18 times
Snow (getting rid of snow): 26 times
Breaking Krieg's Armor: 29 times
Sanji & Zoro voice (announcing): 33 times; also need all support character voices unlocked
The "Fix" sign: 34 times