These are creatures whose diet is not specifically defined, at least to the current knowledge of the contributors of Alien Species Wikia. These include organisms whose diets are presumed to be something, but are not officially known to be so.
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All items (471)
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A
- Aaamazzarite
- Adarian
- Adipose
- Adjule (The Troop)
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- Air Elemental
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- Akiridion
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- Alien (Bart's Not Dead)
- Alien (Battle: Los Angeles)
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- Alien (Bluey)
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- Alien (Spielberg's War of the Worlds)
- Alien (The Darkest Hour)
- Alien (The Man from Planet X)
- Alien Agents (The Arrival, 1996)
- Alpha Centauran
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- Alvarian Space Wyrm
- Ambrian Bat
- Amorphiian
- Amphicephalus
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- Andalite
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- Andromedon
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- Antonio's Species
- Aparoid
- Arachnichimp
- Evolved Arachnichimp
- Arcadroid
- Arcosian
- Arctic Tripedalien
- Arcturan (Doctor Who)
- Arcturan (Goosebumps)
- Asgard (Stargate)
- Asteroid Worm (Samurai Jack)
- Astran
- Atmospheric Beast
- Atraxi
- Aurora Unit
- Axanar
B
C
- C18 Locker Aliens
- Cabal
- Centaurian Slug
- Ceph Heavy
- Changeling (Star Trek)
- Cluckboom
- Collector
- Comet Alien
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- Corvan Gilvo
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- Crab Monster (Steven Universe)
- Crewmate
- Crooked Man
- Crystal Basilisk (Steven Universe)
- Crystalline Entity (Chronicle)
- Cycloid
- Cylon Robot
D
E
F
G
- Ganymede Sea Rat
- Gasgira
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- Ghhhk
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- Giant (Hilda)
- Giant Jelly (Scavengers Reign)
- Giant Lizard (Futurama)
- Giant Turtle (Winx Club)
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- Gizka
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- Glow Fly
- Goo Ball
- Gor-Zog's Species
- Gorbonian
- Gozzo
- Grafflax
- Gray Alien (V/H/S/2)
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- Grub
- Guardian (The Guardian's Tale)
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H
I