Marvel
| Name | Super Name | Code | Actions |
|---|---|---|---|
| Mercy | Mercy | Mercy | Show |
| Mercury | Mercury | Mercury | Show |
| Mercurio the 4-D Man | Mercurio the 4-D Man | Mercur… | Show |
| Mephisto | Mephisto | Mephis… | Show |
| Mentor (Imperial Guard) | Mentor | Mentor… | Show |
| Mentallo | Mentallo | Mental… | Show |
| Mendel Stromm | Mendel Stromm | Mendel… | Show |
| Menace | Menace | Menace | Show |
| Melter | Melter | Melter | Show |
| Meggan | Meggan | Meggan | Show |
| Medusa | Medusa | Medusa | Show |
| Mayhem | Mayhem | Mayhem | Show |
| Maximus Lobo | Maximus Lobo | Maximu… | Show |
| Maximus | Maximus | Maximus | Show |
| Maverick (Chris Bradley) | Maverick | Maveri… | Show |
| Mauvais | Mauvais | Mauvais | Show |
| Mauler | Mauler | Mauler | Show |
| Matthew Risman | Matthew Risman | Matthe… | Show |
| Matsu'o Tsurayaba | Matsu'o Tsurayaba | Matsu-… | Show |
| Mathemanic | Mathemanic | Mathem… | Show |