Astro Boy: The Video Game

Cheat List
Description: Input the following codes for the desired effect:

Disable Supers : L1, L1, R1, R1, L1, LEFT
Infinite Supers : LEFT, L1, RIGHT, L1, UP,DOWN

Max Stats : LEFT, LEFT, R1, DOWN, DOWN,L1

Infinite Dashes : R1, R1, L1, R1, LEFT,UP
Costume Swap (Arena/Classic Costume) : R1, UP,L1, UP, DOWN, R1
Invulnerable : UP, DOWN, DOWN, UP, L1, R1
Unlock Levels : UP, L1, RIGHT, L1, DOWN,L1

Source : http://www.playstation2-cheats.co.uk/your_cheats/30625/Astro_Boy_The_Video_Game_cheats.html