Play as Uranus and Master
     While  the  words are flying onto the Title screen, quickly press
R1, L2, X, L1, R2, Circle on controller two.

Play as Sho and Vermillion
     While  the  words are flying onto the Title screen, quickly press
Circle, R2, L1, X, L2, R1.

Remove the Power Bar
     Pause the game during battle, and hold Circle + Square + Triangle
+ X, then press Select twice.

Warp to Final Boss
     At the Title screen, press Up, Down, Up, Down, Up + Triangle.