Box as Ashy Knucks
Enter "KNUCKS" as a name in career mode to unlock Ashy Knucks.

Box as The Bulldog
Enter "BULLDOG" as a name in career mode to unlock The Bulldog.

Box as The Gorilla
Enter "DE GORE" as a name in career mode to unlock The Gorilla.

Box as The Clown
Enter "CLOWN" as a name in career mode to unlock The Clown.

Super boxer
Enter "100%" as a name in career mode to set all attributes for a created boxer to 100.

Signature moves
Press Triangle + Circle to do a boxer's signature move. For example, press Triangle + Circle with Tua and he will do his devastating left hook.