Aliens with the ability to create and/or manipulate acid.
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Acid Trip -
Big Nose (Ominihero) -
Murk Upchuck (TNO) -
Ultimate Goop (Earth-50)/Timeline 1 -
Slime (AL 12) -
Goop (Earth-50)/Timeline 1 -
Xenomorph -
Armodrillo Mutation
All items (162)
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Barfamel (Battle Ben-OH)
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Barfamel (Ben 10K-OH)
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Beetoleopa
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BenReptile
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Big Nose (Battle Ben-OH)
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Big Nose (Ben 10K-OH)
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Big Nose (Ominihero)
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Biohazard (Earth-1010)
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Bloody (Albedo-OH)
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Brundlefoot (Battle Ben-OH)
C
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Chemtrail (Battle Ben-OH)
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Chunder
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Chunder Tall
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Chunplex
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Cotton-Mouths (Battle Ben-OH)
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Cracheur
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Cranios Lamas
D
E
F
G
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Ghostgoop
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Glutton
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Goop (B10 Reboot: AR)
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Goop (Bad Ben-OH)
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Goop (Battle Ben-OH)
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Goop (Ben 10K-OH)
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Goop (Benzarro-OH)
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Goop (Earth-1010)
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Goop (Earth-2018)
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Goop (Earth-50)/Timeline 1
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Goop (Earth-75)
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Goop (Earth-83)
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Goop (Earth-90)
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Goop (Earth-LD2004)
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Goop (Evfnye 10)
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Goop (Ken 10-OH)
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Goop (Neon 10)
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Goop (Ominihero)
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Goop (Owen 10)
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Goop (TNO)
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Goopgrade
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Gooze
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Green Needle (Universe-7781)
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Guck Amuck
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Guckfreak
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Gutrot (Earth-1010)
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Guttra
H
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J
K
L
M
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Manta Stink
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MeltDown
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Membrane (Spring Fanon Con Alien Creation Contest)
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MoodMatter
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Moodswing
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Moonflower
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Mouthful
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Muck a' Muck (Ben 23-OH)
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MultiVerse (Pokémon Sky)
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MultiWorm
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Murk Upchuck (Battle Ben-OH)
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Murk Upchuck (Ominihero)
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Murk Upchuck (TNO)
N
O
P
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Perk Upchuck (Battle Ben-OH)
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Perk Upchuck (Ominihero)
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Perk Upchuck (TNO)
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PHAcid
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Poissen
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Polymorph (Gwen 10-OH)
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Predatory (Earth-210)
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Ptyon
R
S
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Scorpoison
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Serpentine (Ben 10: Haunted)
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Serquid
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Shlesht-a-Kerl (Jake 10)
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Skunkmoth (AL 12 Reboot)
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Slamworm (Ominihero)
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Slime
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Slime (AF)
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Slime (AL 12)
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Slime Shot
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Slobber
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Sludge Slug
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Snakepit (Ken 10: Omniverse)
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Snakepit (TNO)
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Snot-Guy (Ominihero)
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Spew-Spit (Ben 23-OH)
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Spikeshard (Jay 10)
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Spitter (Battle Ben-OH)
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Spitter (Ben 10K-OH)
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Spitter (Benzarro-OH)
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Spitter (Earth-2018)
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Spitter (Earth-68)
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Spitter (Heroes Endeavour)
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Spitter (Mad Ben-OH)
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Spitter (Ominihero)
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Spitter (Richard 10)
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Spitter (S10)
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Ssslumungousssaur
T
U
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Ultimate Amazona
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Ultimate Ek
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Ultimate Goop (Earth-32)/Dimension 1
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Ultimate Goop (Earth-50)/Timeline 1
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Ultimate Goop (Ultimate Way Big 9,000 Version)
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Ultimate Goop (Universe-7781)
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Ultimate Goop (Zane)
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Ultimate Humungoopsaur
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Ultimate Moodswing
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Ultimate Stinkfly (Ultimate Way Big 9,000 Version)
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Ultimate Upchuck (Ultimate Way Big 9,000 Version)
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UltiVerse
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Ultiverse
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Upchuck (B10 Reboot: AR)
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Upchuck (Ben 10K-OH)
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Upchuck (Earth-2018)
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Upchuck (Earth-2020)
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Upchuck (Earth-50)/Timeline 1
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Upchuck (Earth-90)
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Upchuck (Just the Right Size)
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Upchuck (Neon 10)
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Upchuck (Ominihero)
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Upchuck (PP:I)
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