Planet Earth has been depicted as an invasion target for an amazingly large number of alien species, in all forms of science fiction as well as some conspiracy theories.
All items (550)
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M Space Hunter Nebula Alien
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Ma'at-Hakan
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Macrolatt
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Magog
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Majesdanian
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Majin
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Makkine
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Makluan
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Malmuria
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Mamase Mamasa Mamacusa
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Management
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Marauder
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Marmalade's Species
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Mars Person
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Martian
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Martian (Aldnoah.Zero)
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Martian (Black Hammer)
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Martian (Edison's Conquest of Mars)
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Martian (El Chapulín Colorado, 1973)
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Martian (El marciano, 1970)
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Martian (Flying Disc Man from Mars)
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Martian (Last and First Men)
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Martian (Looney Tunes)
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Martian (Mars Attacks!)
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Martian (The Blue Earthman)
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Martian (The Three Stooges)
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Martian (The War of the Worlds)
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Martian (Tom and Jerry)
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Martian Master
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Marybeth Hutchinson's Species
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Masked Mutant's Species
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Master
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Maxilonian
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Maykr
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Mechanoid (Nexus: The Jupiter Incident)
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Medusan
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Meercock
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Mega Trogg
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Megaborg
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Mercurian Mosquito
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Metal Head
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Metron (Ultraman)
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Metztla
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Mimic (All You Need Is Kill)
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Mimic (Edge of Tomorrow)
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Mind Freak
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Monk
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Moonlander
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Mor-Taxan
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Morbo's Species
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Mort
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Mothman (Dinosaur Warrior)
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Mrevani
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Mustafa al Bacterius' Species
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Mutant Land Fish
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Mutant Mosquito
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Mysterian
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Mysteron
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