Mega Man X Collection Cheats for the GameCube

Rockman: Battle And Chase game:
Beat Mega Man X, Mega Man X2, and Mega Man X3.

Mega Man X4: X's Ultimate armor:
Highlight X at the player select screen. Press X, X, Left, Left, Left, Left, Left, Left(6 times). then hold L + Z and press Start. Hold L + Z until game play begins at the screen with all the Bosses. Beat the first level, then go to the spider stage. Go to the part with a spike spinning on platform. Go down to space below and go all the way to the right. A capsule with the armor will be there.

Mega Man X4: Zero's black armor:
Highlight Zero at the player selection screen. Hold R and press Right, Right, Right, Right, Right, Right(6 times). Release all buttons, then hold X and press Start.

Mega Man X5: X's Super Nova armor:
Highlight X at the character selection screen, then press Up, Up, Down, Down, Down, Down, Down, Down, Down, Down, Down(9 times). A sound will confirm correct entry. Then, press X. You'll start with the Super Nova armor from X4.

Mega Man X5: Megaman's Ultimate armor:
Highlight Megaman at the character select screen, then press Up, Up, Down, Down, Down, Down, Down, Down, Down, Down, Down(9 times). A sound will confirm correct entry. You'll start the game with the Ultimate armor and always have it for use.

Mega Man X5: Zero's Black armor:
Highlight Zero at the character selection screen, then press Down, Down, Up, Up, Up, Up, Up, Up, Up, Up, Up(9 times). A sound will confirm correct code entry. Then, press X. Note: Zero's Black armor will reduce damage slightly as compared to his Red armor.

Mega Man X6: X's Ultimate Armor:
Highlight the "Game Start" option at the Mega Man X6 main menu, then press Left, Left, Left, Right before starting a new game. A sound will confirm code entry. You will begin the game with X's Ultimate Armor, which is very much identical to the same armor from Mega Man X5.

Mega Man X6: Nightmare Zero:
Highlight the "Game Start" option at the Mega Man X6 main menu, then press L, L, L, Z at the main menu. A sound will confirm code entry. Start a new game. When you rescue Zero after defeating him in battle, you will play as the Nightmare version of Zero. Nightmare Zero has all of Zero's moves, but is much more powerful.