This category contains all monsters that do not originate from Earth. Monsters from parallel dimensions are included.
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All items (192)
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- Sander-Thing
- Sandworm
- Sentinel Sphere
- Serleena
- Sharak-Ti Biological Weapon
- Shorty the Klown
- Skull-Faced Alien Master
- Skythulhu
- Slim the Klown
- Soldier Bug
- Son of Blob
- Space Herpes
- SpaceGodzilla
- Spikey the Klown
- Split Face
- Spot the Wonder Blob
- Sputnik Symbiont
- Starro
- Subject 20
- Super Predators
- Synthetics Soldier
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