These are All the codes I've got for Dragon Ball Z Legacy of Goku II

To Play As Hercule
To play as Hercule, press start, then press up, down, left, right, down, and then right. Then you can play as Hercule.

Infinite Health and Infinite Energy
During the gameplay press start and press up(2), down(2), and left once.

In- Game Reset
During the game, hold down A, B, Select, and Start all at once. But remember, you must keep them held down.