| Abbreviation | Definition |
|---|---|
| MES | Mavericks Elite Squad |
| MFI | Majin Federation Intelligence |
| MG | Magic Gate |
| MGLT | Modern Galactic Light Time |
| MHD | Most Hated Driftas |
| MIB | Monster In Bed |
| MICHAEL | Machine with Intelligence, Computerized Human Appearance, and Electronic Love |
| MICHAEL | Mechanical Intelligent Construct Hardwired For Assassination And Efficient Learning |
| MM | Mega Man |
| MM | Metallic Missile |
| MMM | Mysterious Message Man |
| MMT | Might and Magic Tribute |
| MMU | Mega Man Universe |
| MMX | Mega Man X |
| MND | Magi Nation Duel |
| MNDA | Magi Nation Deck Awards |
| MOAT | Mother Of All Trolls |
| MOB | Mark Of the Behr |
| MOB | Masters Of Brutality |
| MOB | Monster Or Beast |