Miss Wednesday:
Press Square(2), Triangle, X(2), Circle while the credits are rolling at the end of the game. A sound will confirm correct code entry.

Pandaman:
Press Circle(2), X, Triangle(2), Square while the credits are rolling at the end of the game. A sound will confirm correct code entry.

Alvida:
Successfully complete the game in event mode as Lufi.

Arlong:
Successfully complete the game in event mode as Nami.

Baki:
Successfully complete the game in event mode as Zolo.

Krieg:
Successfully complete the game in event mode as Sanji.

Kuro:
Successfully complete the game in event mode as Usop.

Smoke:
Successfully complete the game in event mode as Lufi, Nami, Zolo, Sanji, and Usop. Then use Lufi to complete event mode again.

Tashigi:
Successfully complete the game in event mode as Lufi, Nami, Zolo, Sanji, and Usop. Then complete event mode again with each of those characters except for Lufi.