Get a Bogey with Patricia and see what happens.
Unlock Alia, then play with her and either get an
Eagle or get a called game [VS.Mode]. Then she
will do something special!
For Lefties, at the character select menu, press
square to turn left handed.
In one player mode, intentionally miss your first two shots. Then, hit the ball
three times perfectly. All players should now be unlocked.