Disgaea 2: Dark Hero Days Cheats, Codes, Hints, Tips
Cheat: Infinite Magichange Turns
You can throw a character back in the base panel and you'll have infinite turns for Magichange.
Unlockable: Female Samurai Class
Have save data from Disgaea: Afternoon of Darkness to unlock the Female Samurai class.
Unlockable: Magichange
Complete Axel Mode and start a new Adell Mode game to unlock Magichange.
Cheat: Throw Through Panels / Tall Terrain
You can throw right through obstacles that are one square thick. Lift a character when next to the offending panel and aim through the obstacle. Reduce the range while pressing X to find just the right place and you'll throw through the obstacle. You may have to try a few times but you won't be penalized, so just extend and retract while pressing X until it works.
Cheat: Begin Game with Axel Mode (US version)
Select, but don't choose, "New Game" at the Title Screen and press the TRIANGLE, SQUARE, CIRCLE, TRIANGLE, SQUARE, CIRCLE, X to play Axel Mode.