Name | Source | Type | M-113 Creature | Star Trek |
Macra | Doctor Who | Huge crustacoids who feed on noxious gases that are deadly to humans. |
Magma | Ultraman Leo | Saber Tyrant |
Magog | Andromeda |
Magolor | Kirby's Return to Dream Land. |
Mahendo'sat | C. J. Cherryh's Chanur novels |
Maians | Perfect Dark |
Majat | C. J. Cherryh's Alliance-Union universe |
Malons | Star Trek |
Mangalores | The Fifth Element | Thick-skinned humanoids; warriors and weapon specialists. Considered savage and brutish by other races. |
Mantis | Frontier Wars |
Mantrins | Titan A.E. | Kangaroo-like aliens with large, powerful back legs; native to Solbrecht. The character Stith is a Mantrin. Also called Sogowans. |
Marklars | South Park | Orange-skined aliens with egg-shaped heads and yellow eyes. They refer to all people, places, and things as "Marklar". |
Marmosians | Ascendancy |
Marro | Heroscape | Skinless creatures with insectoid social organization |
Martians | H. G. Wells' The War of the Worlds | Tentacled and very intelligent and technologically advanced. Attempted to take over Earth as Mars became less and less habitable for them. |
Martians | Edgar Rice Burroughs's Barsoom series | Humanoid |
Martians | Marvin the Martian from Looney Tunes and Duck Dodgers |
Martians | Premendra Mitra's Mangalbairi (The Martian Enemies) |
Martians | Ray Bradbury's The Martian Chronicles | Humanoid |
Martians | Aelita (1924 movie) | Humanoid |
Martians | Mars Attacks (Topps trading cards) and Mars Attacks! (Tim Burton movie) | Skeletal humanoids with massive craniums and a twisted sense of humour |
Martians | Quatermass and the Pit |
Martians | Larry Niven's Known Space |
Martian Manhunter | DC Comics |
Marzoids | Invader Zim |
Masari | Universe at War | A sentient race of ancient Atlantians that are human-like in appearance. |
Masters | The Tripods |
Mazians | Battlelords of the 23rd Century |
Mebes | Ascendancy |
Mechanon | Star Frontiers | sentient mechanical race created by the Eorna |
Medusans | Star Trek |
Meehooks | Fusion comic book series | dinosaurs with fur |
Meekrob | Invader Zim | Pure energy beings. Meekrob was set to be conquered by Invader Tenn until she received a shipment of malfunctioning SIR Units giving away her location and thus angering the Meekrob, creating further tension between the Meekrob and the Irken Empire. |
Meklars | Master of Orion |
Melconians | Keith Laumer's Bolo series | canine-like humanoids |
Melmacians | ALF |
Melnorme | Star Control |
Melotians | Melonpool |
Memory Donk | Bravest Warriors | The Memory Donks are a species of "old-lady"-like beings that take away the memory of anyone around them. |
Menoptra | Doctor Who |
Mentors | Doctor Who |
Merseians | Technic History by Poul Anderson |
Merewifs | Bravest Warriors | Merewifs are a race of mermaid-like creatures. Most notably, Plum |
Mesklinites | Hal Clement's Mission of Gravity | millipede-like |
Methorians | Barrington J. Bayley's Zen Gun | gaseous giant-giant dwellers |
Metroid | Metroid series |
Metrons | Star Trek |
Micros | Brain Plague by Joan Slonczewski | Microbial aliens that inhabit the brain and offer their host new abilities. |
Microman | Microman |
Micronoids | Apocalypse | Sentient parasitic bacteria |
Minbari | Babylon 5 | Crested humanoids; a small number have telepathic abilities |
Minions | Ascendancy |
Minosians | Star Trek |
Mintakans | Star Trek |
Miradorn | Star Trek |
Misha | Battlelords of the 23rd Century | Humanoid |
Mmrnmhrm | Star Control |
Mon Calamari | Star Wars |
Mondoshawan | The Fifth Element | Humanoid |
Monoids | Doctor Who |
Mogadorians | Lorien Legacies | Humanoid, warlike race intent on destroying the Loric and invade Earth. Described as having very pale skin and dark hair and eyes. |
Moon Dragons | Bravest Warriors | Moon Dragon toenails are used to make the Bravest Warriors' space suits. |
Mooninites | Aqua Teen Hunger Force (individually: Igninokt and Err) | Pixelated-liked aliens |
Mork | Mork and Mindy |
Morlocks | H. G. Wells' The Time Machine |
Morlocks | Larry Niven's Known Space |
Moroks | Doctor Who | Humanoid |
Mor-Taxans | War of the Worlds (TV series - first season) |
Morthren | War of the Worlds (TV series - second season) |
Movellans | Doctor Who | Humanoid robotic conquerors; fought a war with the Daleks |
Moxx of Balhoon | Doctor Who | Blue, large-headed humanoid |
Mri | C. J. Cherryh's Faded Sun trilogy | Humanoid |
Mr. Saturn | EarthBound |
Mrrshan | Master of Orion |
Mudokons | Oddworld series |
Muffalos | RimWorld | Sky blue creatures descended from buffaloes, as well as nearly identical to hornless versions of such. |
Mugato | Star Trek |
Mutons | UFO Defense |
Mutzachans | Battlelords of the 23rd Century | Humanoid |
Muuh | Orion's Arm |
Mycon | Star Control |
The Mysterons | Captain Scarlet and the Mysterons |