This is the category for all Omnnitrix aliens.
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Ultimate XLR8 -
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Original Playlist -
XLR8 (Earth-1010) -
Ultimate Heatblast (BTUE) -
Diamondhead (Ominihero) -
Elements (Ominihero) -
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All items (7013)
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A
- A-pax (Omnitrix Unleashed)
- A.I.lien
- ABC
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Abofriggine
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Abomination (Alien)
- Abraham Lincoln
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Absalon
- Absolute Hero
- Absolute Zero (Heroes Endeavour)
- Absolute Zero (TNO)
- Absolute Zero (Trent 10)
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Absolute Zero (Vocaloid: Ultimate Alien)
- Absorbat
- Absorbat (S10)
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Absorbatron
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Absorbent
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Absorber
- Absorber (Ben 10: A new dawn)
- Absorber (Caostrixes)
- Absorblob
- Absorbo
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Abyss Jaws
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Accelerate (Earth-67)/Dimension 10
- Acclimate
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Aceheart
- Acid Dic Legs
- Acid Test
- Acid Trip
- AcidBath
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Acidfire
- Acidrain
- Acidrain (S10)
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Acro-bat
- Acro-Bat-Ic
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Across the Milky Way/Aliens
- Actually Slenderman
- Adam's Apple
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Adamantion
- Adrenawin
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Aero Dactyl
- Aero Jet (Jon's Dimension)
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Aero-dactyl
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Aero-Missil
- Aerodrill
- Aerofin
- Aerojet
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Aerophant
- Aerophibian (Gwen 10-OH)
- Aerosaur
- Aerray
- Aethradon
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Afterburn
- Afterimage
- Afterlife
- Agention
- Aggraindizer
- Agilitron (Earth-91)/Dimension 21
- Agilmur
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Air Fare
- Air Hummingbird
- Air Whirl
- Airbug
- AirChiller
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Airdactyl
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Airhead
- Airhead (Tommy 6)
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Airthrower
- Akhuhoth
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Al Capaca
- Alaquartzam
- Alcreamist
- Alemo (Jake 10)
- ALF (Earth-73)/Timeline 1
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Alfatrix/Aliens
- ALG
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Alien 13 (Earth-32)/Dimension 23
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Alien 2
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Alien Arsenal
- Alien Infinity
- Alien Killer
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Category:Alien Lists
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Alien M
- Alien X (B10 Reboot: AR)
- Alien X (Bad Ben-OH)
- Alien X (Battle Ben-OH)
- Alien X (Ben 10 Unleashed)
- Alien X (Benzarro-OH)
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Alien X (Cosmicverse)
- Alien X (Decatrix)
- Alien X (Earth-1010)
- Alien X (Earth-2018)
- Alien X (Earth-32)/Dimension 1
- Alien X (Earth-4443)
- Alien X (Earth-50)/Timeline 1
- Alien X (Earth-68)
- Alien X (Earth-77)/Timeline 1
- Alien X (Earth-96)/Dimension 29
- Alien X (IRR)
- Alien X (Mad Ben-OH)
- Alien X (Nega Ben-OH)
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Alien X (Neon 10)
- Alien X (Ominihero)
- Alien X (OMT)
- Alien X (TNO)
- Alien X (Universe-7781)
- Alien XIII (Earth-32)/Dimension 1
- Alien XIIIII
- Alien Z
- Alien Z (Anaconda999)
- Alien Z (Ben 23-OH)
- Alien ΙΓ (Earth-32)/Dimension 67
- Alien-Whatever (Neon 10)
- Alienics (A-B10)
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Category:Aliens in Ben 10 Ultimate Team Tennyson
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Category:Aliens in Ben 10: Beyond Bellwood
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Category:Aliens in Ben 10: Delta Days
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Category:Aliens in Ben 10: Reboot Revolution
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Category:Aliens in Ben 10: Requiem
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Category:Aliens in Ben 10: Road Trip
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Category:Aliens in Brandon 10
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Category:Aliens in Death of Ben 10
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Category:Aliens in Not Applicable
- Aliens in OV9 Enterprise
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Category:Aliens in Ray 10
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Category:Aliens in Sem 10
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Aliens in the Fusetrix Saga
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Category:Aliens in the Productions of Ben10fan3
- AliRen X
- Alkamine
- All my Buddies
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ALL X
- Alli-Gator
- Alloy
- AllyGator (Earth-103)/Dimension 1-2
- All☆Star Cosmic
- All☆Star Requiem
- Almighty
- Alpha Echo Echo
- Alpha Swampfire
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Alphacat
- Alucard
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Amalgam
- Amazing Cannonbolt
- Amazing ChamAlien
- Amazing Ditto
- Amazing Form
- Amazing Goop
- Amazing Rath
- Amazing Waylighter
- Amazing Whirlwind
- Amazon Pest
- Amazona
- Amazona (Bad Neon)
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Amazona (Echidna)
- Amazona (Medusa)
- Amazona (Melusine)
- Amazona (Neonzarro)
- Amazona (Tribal Neon)
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Ambush
- Amoebola
- Among X
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Amorphis
- Amp-Eye
- Amp-sreech
- Ampethyst
- AmpFibian (AASC)
- AmpFibian (B10 Reboot: AR)
- AmpFibian (Bad Ben-OH)
- AmpFibian (Battle Ben-OH)
- Ampfibian (Ben 10 Unleashed)
- AmpFibian (Earth-1010)
- AmpFibian (Earth-2018)
- AmpFibian (Earth-32)/Dimension 1
- Ampfibian (Earth-50)/Timeline 1
- AmpFibian (Earth-68)
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AmpFibian (Earth-83)
- AmpFibian (Earth-90)
- AmpFibian (Earth-96)/Dimension 29
- AmpFibian (Nega Ben-OH)
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AmpFibian (Neon 10)
- AmpFibian (Ominihero)
- Ampfibian (OMT)
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Ampfibian (Starbound)
- AmpFibian (T10)