Select Pro Players in Single Player Mode:
Go to the 'My Character' screen and hold the Left Analog-Stick Left while tapping Y. Your character can then be changed to a Pro you select. Pro players must already be 'unlocked' for this to work.

Unlock Ability to Fly
During game play hold Black + X + Right Trigger and press Up, Up, Down, Down, Right, Left, Down, Up.

Unlock Cheat Mode:
When your player has maxed out go to the 'My Character' menu and press White to unlock Gode Mode, Slow Motion and Extra Time Decals.

Unlock ALL Characters:
Play ALL of the Single player mode tournaments and place in the top three in each event.