| Name | Attribute | Level | Type |
|---|---|---|---|
| Merchant Maymuna | - | 1 | General |
| Merchant Xin Peng | - | 1 | General |
| Mesmerist Jello | 38 | Boss Monster | |
| Metarealm | - | 1 | General |
| Metarealm | - | 1 | General |
| Metarealm | - | 1 | General |
| Metarealm Abyss Lord Mitholia | 73 | Boss Monster | |
| Metarealm Monsters | - | 1 | General |
| Mia | - | 1 | General |
| Mia's Assistant Jo | - | 1 | General |
| Miasma | 113 | General Monster | |
| Miasma | 113 | General Monster | |
| Micki | - | 1 | General |
| Micro Pollution Bug | - | 108 | General Monster |
| Micro Pollution Bug | - | 108 | General Monster |
| Micro Pollution Bug | - | 108 | General Monster |
| Micro Pollution Bug | - | 108 | General Monster |
| Micro Pollution Bug | - | 108 | General Monster |
| Micro Pollution Bug | - | 108 | General Monster |
| Micro Pollution Bug | - | 108 | General Monster |
| Micro Pollution Bug | - | 108 | General Monster |
| Middle Brother | - | 1 | General |
| Midnight Tempest Prospero | 57 | General | |
| Midnight Tempest Prospero | 57 | Boss Monster | |
| Mighty Man | - | 1 | General |
| Mighty Mini Natsuko | - | 5 | General |
| Mighty Moomoo | - | 5 | General |
| Mikhail | - | 1 | General |
| Milksha | - | 1 | General |
| Mimi | - | 1 | General |
| Mimi's Father | - | 1 | General |
| Mimic Chest | 63 | General Monster | |
| Mimicry Magic Crystal | 91 | General Monster | |
| Mimicry Magic Crystal | 90 | General Monster | |
| Mindset Flower | - | 1 | Interactive |
| Mine Kingdom Royal Guards | - | 1 | General |
| Mine Leader Zali | - | 50 | General |
| Mine Worm | 98 | General Monster | |
| Mine Wraith | 15 | General Monster | |
| Miner | - | 50 | General |
| Miner | - | 1 | General |
| Miner Foreman | - | 1 | General |
| Miner Ken | - | 1 | General |
| Miner Theo | - | 1 | General |
| Miner Waldorf | - | 1 | General |
| Mineral Crystal Source | - | 1 | General |
| Mineral Crystal Source | - | 1 | General |
| Mingming | - | 1 | General |
| Mingming | - | 1 | General |
| Mingming | - | 5 | General |