X-Men: The Official Game [GC]

Enter the codes in the Cerebro Files menu. The code can be entered using either the control pad or control stick.

Code - Effect

Right, Right, Left, Left, Down, Up, Down, Up, Start - Training mission for Iceman.
Up, Up, Down, Down, Left, Right, Left, Right, Start - Training mission for Nightcrawler.
Down, Down, Up, Up, Right, Left, Right, Left, Start - Training mission for Wolverine.

Comic Alternate Costume
Collect all Sentinal Techs with a character to unlock his or her alternate comic costume.

Street Alternate Costume
Collect all Weapon X files with a character to unlock his or her alternate street costume.

Unlock Danger Room Missions
There are eight danger room missions. You unlock the first three as you play through the game. To unlock the other six danger room missions, you must collect all Sentinel files and Weapon X files with each character.