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)
S
- Shadoen
- Shadow Kin
- Shakturi
- Shalka
- Shelk
- Shivan
- Shroob
- Sidari
- Sigea
- Skithra
- Skrugg
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- Slime Fungus
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- Sontaran
- Soul
- Soul Worm
- Space Invader
- Space Lasagna
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- Spectre
- Spino
- Splugorth
- Sprocket Robot
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- Squillacci
- Star Person (Sliders)
- Starman (Earthbound)
- Stranger (The Coming of the Strangers)
- Strogg
- Sun Creature
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- Sycorax
T
- Tachyon
- Taelon
- Tako
- Tao Tei
- Tarkatan
- Tatanga's Species
- Technician
- Tenga Warrior
- Thanagarian
- Thanatok
- The 456
- The Ambassador's species
- The Flood (Halo)
- The Fudd
- The Invader's Species (Looney Tunes)
- The Joining
- The Race (Worldwar)
- The Spore
- The Vigil
- Theran
- They
- Thin Man
- Thrax
- Three-Armed Martian
- Three-Eyed Venusian
- Thresher (Earthfall)
- Thubanian
- Tiny Cyclopean Alien
- Titan (Resistance)
- Toclafane
- Tommyknocker
- Torkor
- Torori
- Trench Walker
- Triassian
- Triceraton
- Triffid
- Trilopod
- Trisolaran
- Trogg
- True Person
- Trytolian
- Tsal-Khan
- Tuffle
- Tunston
- Twonkie
- Tyrusian
- Tythyk
V
- V'Ran
- V'Ran Giant
- Vampire Intelligence
- Vedomi
- Vegan (Marvel)
- Vegetarian Alien from Outer Space
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- Velgrox
- Vellakwan
- Venusian (It Conquered the World)
- Venusian (The Critters)
- Vergal
- Vespa
- Viltrumite
- Viper
- Viperox
- Viras' Species
- VIRM
- Visitor (Tales from the Crypt)
- Visitor (V, 2009)
- Visitor (Wild's End)
- Vl'hurg
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- Vodun
- Volge
- Volulan
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- Vortaak
- Vroom
- Vuvv
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