Ghetto Fabulous:
Enter GETFAB as the first name of a created boxer. Save the created boxer and Ghetto Fabulous will be unlocked under the heavyweights roster.
Small fighters:
Hold Up at the venue selection screen until the sound of a bell is heard. Select a venue to begin a fight with both fighters small.
Better ring performance:
Pimp out your ring entrances. The more extravagant they are, the more the crowd will like you and the better you will perform.