| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| MarQuel | Mederos | 5' 10" | 155 lbs. | 69.0" | Orthodox | 9 | 1 | 0 | ||
| Uros | Medic | The Doctor | 6' 1" | 170 lbs. | 71.0" | Southpaw | 9 | 2 | 0 | |
| Todd | Medina | El Tiburon | 5' 10" | 193 lbs. | -- | Southpaw | 11 | 9 | 0 | |
| Jason | Medina | 5' 9" | 180 lbs. | -- | 21 | 15 | 1 | |||
| Jose | Medina | Chicho | 6' 0" | 205 lbs. | 74.0" | Orthodox | 11 | 3 | 0 | |
| Emil | Meek | Valhalla | 5' 11" | 170 lbs. | 74.0" | Switch | 9 | 5 | 1 | |
| Sanford Alton | Meeks | 6' 5" | 265 lbs. | 75.0" | Orthodox | 1 | 1 | 0 | ||
| Gerald | Meerschaert | GM3 | 6' 1" | 185 lbs. | 77.0" | Southpaw | 36 | 17 | 0 | |
| Frank | Megallon | 5' 10" | 185 lbs. | -- | Southpaw | 2 | 3 | 0 | ||
| Derrick | Mehmen | Caveman | 6' 4" | 205 lbs. | -- | 19 | 9 | 0 | ||
| Miika | Mehmet | -- | 205 lbs. | -- | Orthodox | 3 | 5 | 0 | ||
| Jordan | Mein | Young Gun | 6' 0" | 170 lbs. | 73.0" | Orthodox | 31 | 12 | 0 | |
| Bryce | Mejia | 6' 1" | 170 lbs. | -- | 3 | 1 | 0 | |||
| Brian | Melancon | 5' 8" | 170 lbs. | -- | Orthodox | 7 | 3 | 0 | ||
| Brandon | Melendez | The Murderer | 5' 11" | 155 lbs. | -- | Southpaw | 25 | 25 | 0 | |
| Gilbert | Melendez | El Nino | 5' 9" | 145 lbs. | 73.0" | Orthodox | 22 | 8 | 0 | |
| Nair | Melikyan | Ahalkalakski | 5' 6" | 155 lbs. | -- | 11 | 0 | 0 | ||
| Marcelo | Mello | 5' 7" | 170 lbs. | -- | Southpaw | 1 | 0 | 0 | ||
| Fabio | Mello | 5' 5" | 155 lbs. | -- | Southpaw | 11 | 8 | 0 | ||
| Vanessa | Melo | 5' 5" | 135 lbs. | 65.0" | Orthodox | 11 | 8 | 0 | ||
| Antonio | Mendes | Samurai | 6' 3" | 205 lbs. | 77.0" | Southpaw | 18 | 13 | 0 | |
| Chad | Mendes | Money | 5' 6" | 145 lbs. | 66.0" | Orthodox | 18 | 5 | 0 | |
| Augusto | Mendes | Tanquinho | 5' 6" | 135 lbs. | 65.0" | Orthodox | 6 | 2 | 0 | |
| Eddie | Mendez | 5' 10" | 185 lbs. | -- | 8 | 3 | 1 |