| Lady Spider, Maybelle Reilly (8 variants) | 695 |
| Lethal Scheme (4 variants) | 353 |
| Lethal Scheme (12 variants) | 157 |
| Lightning Bolt (8 variants) | 806 |
| Lightning Greaves (12 variants) | 202 |
| Living Laser (12 variants) | 55 |
| Living Laser (4 variants) | 366 |
| Living Lies of Loki (8 variants) | 627 |
| Living Lightning, Charged Up (12 variants) | 764 |
| Lockjaw, Slobbering Teleporter (12 variants) | 36 |
| Lockjaw, Slobbering Teleporter (4 variants) | 336 |
| Loki, God of Lies (8 variants) | 512 |
| Loki, Lord of Misrule (8 variants) | 628 |
| Loki, the Deceiver (12 variants) | 86 |
| Loki, the Deceiver (4 variants) | 407 |
| Loki's Scepter (12 variants) | 56 |
| Loki's Scepter (4 variants) | 367 |
| Love on the Battlefield (4 variants) | 408 |
| Love on the Battlefield (12 variants) | 87 |
| Loyal Guardian (12 variants) | 176 |
| Loyal Retainers (4 variants) | 313 |
| Loyal Retainers (12 variants) | 136 |
| Lucky the Pizza Dog (8 variants) | 726 |
| Luke Cage, Hero for Hire (8 variants) | 696 |
| Lurking Lizards (8 variants) | 816 |
| Luxury Suite (4 variants) | 482 |
| Luxury Suite (12 variants) | 252 |
| M.O.D.O.K., Evil Intellect (8 variants) | 509 |
| M'Baku, Jabari Chieftain (12 variants) | 67 |
| M'Baku, Jabari Chieftain (4 variants) | 382 |
| MACH-1, Swooping Scoundrel (8 variants) | 662 |
| Machine Man, Model X-51 (8 variants) | 751 |
| Madame Hydra, Reanimated (12 variants) | 538 |
| Make Your Move (12 variants) | 137 |
| Mandroid Squadron (6 variants) | 841 |
| Martial Coup (12 variants) | 138 |
| Martial Coup (4 variants) | 314 |
| Marvel Boy, Noh-Varr (8 variants) | 743 |
| Marvelous Melee (12 variants) | 549 |
| Masked Meower (8 variants) | 807 |
| Matt Murdock, Justice Seeker (8 variants) | 602 |
| Medusa, Inhuman Queen (12 variants) | 68 |
| Medusa, Inhuman Queen (4 variants) | 383 |
| Metallic Mimic (4 variants) | 441 |
| Metallic Mimic (12 variants) | 203 |
| Metalwork Colossus (12 variants) | 204 |
| Metalwork Colossus (4 variants) | 442 |
| Meteor Golem (12 variants) | 205 |
| Methods of the Mighty (4 variants) | 315 |
| Methods of the Mighty (12 variants) | 21 |