Sorted alphabetically by last name · 2711 fighters
| Name | Nickname | |
|---|---|---|
| MB | Melsik Baghdasaryan | "The Gun" |
| MB | Melton Bowen | "The Punisher" |
| MG | Melvin Guillard | "The Young Assassin" |
| MD | Merab Dvalishvili | "The Machine" |
| MA | Michael Aswell Jr. | "The Texas Kid" |
| MB | Michael Bisping | "The Count" |
| MC | Michael Chandler | "Iron" |
| MC | Michael Chiesa | |
| MG | Michael Graves | |
| MJ | Michael Johnson | "The Menace" |