| Rarity | Challenge | Gefahr |
| Uncommon | Kor | Kor |
| Rare | Landru | Landru |
| Common | Lawgivers | Gesetzgeber |
| Common | Lazarus | Lazarus |
| Uncommon | Leila Kalomi | Leila Kalomi |
| Rare | Lenore Karidian | Lenore Karidian |
| Rare | Lethe | Lethe |
| Very Rare | Lieutenant Commander Gary Mitchell (CH) - Challenge | Lieutenant Commander Gary Mitchell (Ge) - Gefahr |
| Very Rare | M-113 Monster (Crewman Green Form) | M-113 Gestaltwandler (Gestalt von Besatzungsmitglied Green) |
| Very Rare | M-113 Monster (Natural Form) | M-113 Gestaltwandler (Natürliche Gestalt) |
| Common | Magda Kovacs | Magda Kovacs |
| Uncommon | Mara | Mara |
| Uncommon | Melkotians | Melkoten |
| Rare | Metron | Metron |
| Uncommon | Military Officers, 20th Century | Militäroffiziere des 20. Jahrhunderts |
| Uncommon | Miri (Ch) - Challenge | Miri (Ge) - Gefahr |
| Uncommon | Mudd's Women (Ch) - Challenge | Die Frauen des Mr. Mudd |
| Rare | Mugato | Mugato |
| Very Rare | Nomad | Nomad |
| Common | Onlies | Kleinlinge |
| Very Rare | Organian Council of Elders | Altestenrat der Organier |
| Uncommon | Otto | Otto |