Here are some cheats and tips for the game Mega Man X4.
Special Armor
X’s R-Teammate Armor:
1. At the player select screen, highlight X.
2. Press B twice.
3. Press Left on the D-Pad 6 times.
4. Hold L and R and press Start.
Zero’s Black Armor:
1. At the character select screen, highlight Zero.
2. Hold R and press Right on the D-Pad 6 times.
3. Release R, hold down the “B” button, and press Start.