At the "Press Start" screen, press Up(2), Down(2), Left, Right, Left, Right, B, A. If you entered the code correctly, you will hear a sound. The new costume allows Wolverine to heal quicker. -From: Daniel1308767509@aol.comLevel passwords
|Downtown||Wolverine's head, Wolverine's claws, X-Men sign, Wolverine's body|
|Downtown||Wolverine's claws, Sabrewolf, Wolverine's body, Wolverine's head|
|Tokyo||Skull, Wolverines head, X-Men sign, Wolverine's claws|
|Lab||Claw, Blue Head, X-Men sign, Skull|
|Lab||Skull, X-Men sign, Wolverine's claw, Sabrewolf|
|Blue Head, Skull, X-Men sign, Lady|
Note: You must have a 2.1 or higher version of the Game Shark to use these codes in a Game Boy Color system.