Go to create a champ mode, enter your first or last name as GETFAB and save the profile. Go to Play Now or Hard Hits. Fabolous is now unlocked as a heavyweight boxer.

In the Game Modes screen tap left 16 times until you hear a bell. You now have all venues.

In the immediately available bonus game Super Punch-Out!!, you must complete all of the four circuits. Then, go back to Fight Night: Round 2 , select "Play Now, and then "Heavyweight" for the boxing class. You'll now find Little Mac in the selection of boxers!