| Name ▼ | Type | CR | Version | Book |
|---|---|---|---|---|
| Merfolk Salvager | Humanoid | 1 | 2014 | Ghosts of Saltmarsh |
| Merfolk | Humanoid | 1/8 | 2014 | 2014 Monster Manual |
| Mercykiller Bloodhound | Humanoid | 7 | 2014 | Morte's Planar Parade |
| Mercion | Humanoid | 3 | 2014 | The Wild Beyond the Witchlight |
| Mercenary Envoy | Humanoid | 1 | 2014 | Adventures in the Forgotten Realms: From Cyan Depths |
| Mercane | Celestial | 5 | 2014 | Boo's Astral Menagerie |
| Mephistopheles | Fiend | 27 | 2014 | Multiple Books (CoA, MaBJoV) |
| Mennek Ariz | Humanoid | 5 | 2014 | Tales from the Yawning Portal: Against the Giants |
| Mend-nets | Humanoid | 1/8 | 2014 | Rise of Tiamat |
| Memory Web | Aberration | 4 | 2024 | Quests from the Infinite Staircase |