Gaming4Dummies.com
Platform: Game Gear

Codes For Mega Man
Mega Man

Last part of difficult mode:
Enter A3, B5, C3, D3, E5 as a password.
Level Password
StarmanA3, A6, B2, C1, E5
StonemanC3, D6, E2, E4, F1
NapalmmanA5, C1, C3, C4, D3
BrightmanA4, B4, B5, C1, F6
Dr. Wiley's Castle4A, 4B, 5B, 1C, 6F