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 (546)
S
- Sapper
- Saucer Man
- Sauceroid
- Scorpian
- Scorponok (Transformers: Rise of the Beasts)
- Scott's species
- Scrin
- Scub Coral
-
- Sebacean
- Sequid
- Shadoen (Roswell Conspiracies)
- Shadow Kin
- Shakturi
- Shalka
- Shelk
- Shivan
- Shrikethorn
- Shroob
- Sidari
- Sigea
- Skithra
- Skrugg
-
- Slime Fungus
-
- Sontaran
- Soul
- Soul Worm
- Space Invader
- Space Lasagna
-
- Spectre
- Spiderdemon
- Spino
- Splugorth
- Sprocket Robot
-
- Squillacci
- Starman (Mother)
- Stranger (The Coming of the Strangers)
- Strogg
- Summoner
- Sun Creature
-
- Sweep (Transformers: Rise of the Beasts)
- Sycorax (Doctor Who)
- Sydonai
- Symbiotic Legion
T
- Tachyon
- Taelon
- Tako
- Tao Tei
- Tarkatan
- Tatanga's Species
- Technician
- Tenga Warrior
- Terraformar
- Thanagarian
- Thanatok
- Thanos
- The 456
- The Ambassador's species
- The Flood
- The Joining
-
- The Race (Worldwar)
- The Shimmer
- The Spore
- The Vigil
- Theran
- Thin Man
- Three-Armed Martian
- Three-Eyed Venusian
- Thresher (Earthfall)
- Thubanian
- Tiny Cyclopean Alien
- Titan (Doom)
- Titan (Resistance)
- Tommyknocker
- Torkor
- Torori
- Trespasser
- Triassian
- Triceraton
- Trilopod
- Trisolaran
- Trogg
- True Person
- Trytolian
- Tsal-Khan
- Tunston
- Tyrusian
- Tythyk
V
- V'Ran
- V'Ran Giant
- Vampire Intelligence
- Vedomi
- Vegan (Marvel)
- Vegetarian Alien from Outer Space
-
- Velgrox
- Vellakwan
- Venusian (It Conquered the World)
- Venusian (The Critters)
- Vergal
-
- Vilgax
- Viltrumite
- Viper
- Viras
- VIRM
- Visitor (Tales from the Crypt)
- Visitor (V, 2009)
- Visitor (Wild's End)
- Vl'hurg
- Vodun (Roswell Conspiracies)
- Volge
- Volulan
- Vortaak
- Vroom
- Vuvv
W
Z