X-men: Children Of The Atom Cheats

How to take more damage:
Submit the code god at the message screen. You will see the message GOD MODE ENABLED if you have entered the code correctly. If you exit the message screen you will see the phrase SINISTER HAS CHANGED THE CODE in the top left portion of the screen. In this mode, fighters will get greater damage.

Unlock Juggernaut or Magneto:
Unlock  cheat mode. Enter the system menu and enable the "Boss Select" option. Save the modified settings. Start normal game and select a fighter and block mode. Hold all three punch buttons down (to Unlock Juggernaut) or all three kick buttons (to Unlock Magneto) just before the match begins to load. Release the buttons after the match finishes loaded.

Unlock Akuma:
Highlight Spiral, wait three seconds, press LEFT, wait one second, press LEFT, wait one second, press LEFT, wait one second, then highlight Iceman. Then, press RIGHT, wait one second, press UP, wait one second, press LEFT, wait one second, press LEFT, wait one second. Omega Red should be highlighted. Press DOWN, wait three seconds, then press LK + HP + HK. Akuma fall onto the screen to confirm correct code entry.

Get unlimited continues:
Unlock cheat mode. Activate the FREE PLAY option in the system menu.

Unlock Juggernaut's stage:
Begin a new game with two players, with one of the players using Juggernaut. Let the player controlling Juggernaut to beat the other player. Have the losing player press START. Press START on Juggernaut's face when it appears, then have the losing player quickly press START when the "Space Port" stage appears.
 

Get a triple team:
Unlock  cheat mode and start playing with any character. Press and hold all three punch buttons to Unlock Juggernaut or all three kick buttons to Unlock Magneto. But, remember you can't switch back to the original player.