Omnitrix Aliens

Alien 	Species 	Planet 	How It Was Unlocked/Locked
Alaquartzam 	Basaltine 	Mystigneous 	TBA
Alien X 	Celestialsapien 	Zvezda 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Locked by Ben to prevent accidental usage or usage by AlbedoTemporarily unlocked to locate and defeat Aggregor during the events of The Forge of Creation, although to no avail
Amoebola 	Kema'i 	Energnag 	TBA
AmpFibian 	Amperi 	Lacuscis 	Unlocked when the Ultimatrix scanned Ra'ad's DNA during the events of Fused
Arctiguana 	Polar Manzardill 	X'Nelli 	Locked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Armodrillo 	Talpaedan 	Terraexcava 	Unlocked when the Ultimatrix scanned Andreas' DNA during the events of Andreas' Fault
Astrodactyl 	Aethradon 	Terradino 	Unlocked during the events of While You Were Away
Atomix 	Scheletom 	Phalagngan 	Unlocked accidentally by Azmuth in For A Few Brains More
Ball Weevil 	Barragian 	Gincarterria II 	Unlocked during the events of Of Predators and Prey: Part 1
Big Chill 	Necrofriggian 	Kylmyys 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Binoculears 	Lapentande 	Byen Lwen 	TBA
Blitzwulf 	Loboan 	Luna Lobo 	Unlocked when the Yenaldooshi scratched the Omnitrix in BenwolfLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Brainstorm 	Cerebrocrustacean 	Encephalonus IV 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Bullfrag 	Incursean 	N/A 	Unlocked by Azmuth between the events of The Frogs of War: Part 1 and The Frogs of War: Part 2
Buzzshock 	Nosedeenian 	Nosdeen Quasar 	Unlocked by Phil during the events of Max's Monster
Cannonbolt 	Arburian Pelarota 	Arburia 	Unlocked during the events of The Big TickLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Unlocked again using Master Control during the events of '"War of the Worlds: Part 1
ChamAlien 	Merlinisapien 	Abscondas 	Unlocked by scanning Prisoner 775 in Prisoner Number 775 is Missing
Chromastone 	Crystalsapien 	Mor'Otesi 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Locked when destroyed by Vilgax during the events of Vengeance of Vilgax: Part 2Unlocked when a Crystalsapien DNA sample was added to the database again
Clockwork 	Chronosapien 	Tempparatus 	Unlocked by Ultimate Ben 10,000 during the events of Ben 10,000 Returns
Diamondhead 	Petrosapien 	Petropia 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Unlocked again after being ressurected from the remnants of Chromastone
Ditto 	Splixson 	Hathor 	Unlocked during the events of Divided We StandLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Eatle 	Kumainto 	Salag 	Unlocked by Ultimate Ben 10,000 during the events of Ben 10,000 Returns
Echo-Echo 	Sonorosian 	Tuba Canarent 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Elastick 	Gomasapien 	Estirar 	Unlocked during the Earth-2018 version of the events of It Was Them as depicted in Bounce Back From This
EsCargo 	Plugrosa L'interieur 	Bouge Toi 	TBA
Eye Guy 	Opticoid 	Sightra 	Locked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Locked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Fasttrack 	Citrakayah 	Chalybeas 	Unlocked by Ultimate Ben 10,000 during the events of Ben 10,000 Returns
Feedback 	Conductoid 	Telsavorr 	Lost when the DNA sample was destroyed by Malware during the flashback events of Showdown: Part 1Locked when Azmuth deemed Ben unworthy of the transformation
Four Arms 	Tetramand 	Khoros 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Unlocked during the events of Video Games
Frankenstrike 	Transylian 	Anur Transyl 	Unlocked when Dr. Viktor grabbed the Omnitrix during the events of Be Afraid of the DarkLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Ghostfreak 	Ectonurite 	Anur Phaetos 	One of the original ten aliens unlockedLocked when Zs'Skayr escaped the OmnitrixUnlocked when an Ectonurite was added to the database with safety precautions
Goop 	Polymorph 	Viscosia 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Gravattack 	Galilean 	Keplerr 	Unlocked during the events of A Jolt From the Past
Grey Matter 	Galvan 	Galvan Prime 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Gutrot 	Gastulence 	Gasceomestry 	Unlocked during the events of Animo Crackers
Heatblast 	Pyronite 	Pyros 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Humungousaur 	Evolved Vaxasaurian 	Terradino 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Made to be permanently Ultimate by Skurd during the Earth-2018 version of the events of Stuck On You as depicted in Permanently Ultimate, Ultimately Permanent
Jetray 	Aerophibian 	Aeropela 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Jury Rigg 	Arkgnthasapien 	Daemonium 	Unlocked during the events of The Eggman Cometh
Kickin Hawk 	Plumavem 	Fugna 	Unlocked after scanning Liam during the events of Outbreak/The New Outbreaks
Level-Headed 	Shenshangxian 	Jiayouzhan 	TBA
Lodestar 	Biosovortian 	Attrepellerre 	Unlocked by Azmuth at the end of of War of the Worlds: Part 2
Mass Effect 	Densasapien 	Similadem 	TBA
Mimecraft 	Terrifiant 	The Semblant Tear 	TBA
Mole-Stache 	Talparum 	Tracpala 	Unintentionally unlocked by Blukic & Driba during the events of Outbreak/The New Outbreaks
Mossquito 	Racomitrium Servum 	Lepidopterra 	TBA
NRG 	Prypiatosian-B 	Yadergorod 	Unlocked by scanning P'andor during the events of Too Hot To Handle
Nanomech 	1/2 Nanochip1/2 User's Species	N/A 	Unlocked by scanning Victor Validus' nanochips during the events of Ben 10: Alien Swarm
Overflow 	Cascan 	Cascareau 	Unlocked during the events of The More They Stay The Same
Pesky Dust 	Nemuina 	Nemunimos IV 	Unintentionally unlocked by Blukic & Driba during the events of Outbreak/The New Outbreaks
Poison Dart 	Hilo-Hilo Maka 	Hilo Pagpatay 	TBA
Portaler 	Sofortür 	Kotal 	TBA
Puffertrip 	Ickthyperambuloid 	Gilli-Perambulous Promenade	TBA
Rath 	Appoplexian 	Rabiado 	Unlocked by the presence of the Tiffin during the events of The Con of Rath
Ripjaws 	Piscciss Volann 	Piscciss 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Unlocked by scanning Magister Pyke during the events of Deep
Sandbox 	Shakaralramal 	Yataghayarun 	Unlocked during the Earth-2018 version of the events of The More Things Change: Part 1 as depicted in Sand-Bloxx'd
Scatterjack 	Klomosapiem 	Pollnos 	Unlocked by Azmuth in an undecided episode
Shocksquatch 	Gimlinopithecus 	Pattersonea 	Unlocked during the events of Ben 10-Generator Rex: Heroes United
Smoke Stack 	Fumusapien 	Ignisque Nidore 	TBA
Snare-Oh 	Thep Khufan 	Anur Khufos 	Unlocked when the Mummy touched the Omnitrix during the events of Under WrapsLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Snot Goblin 	Splicchac 	Pierahruzanasc 	Unintentionally unlocked by Blukic & Driba during the Earth-2018 version of the events of Outbreak as depicted in The New Outbreaks
Spidermonkey 	Arachnichimp 	Aranhaschimmia 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Spitter 	Spheroid 	Scalpasc 	TBA
Squidstrictor 	Chimera Sui Generis 	Prodilligo 	TBA
Stinkfly 	Fugetor 	Lepidopterra 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Storm Cell 	Fulmini 	Fulmas 	TBA
Swampfire 	Methanosian 	Methanos 	Unlocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Terraspin 	Geochelone Aerio 	Aldabra 	Unlocked when the Ultimatrix scanned Galapagus during the events of Escape From Aggregor
Thriller Whale	Balentis 	Ossicorca Oceanus 	Unintentionally unlocked by Blukic & Driba during the Earth-2018 version of the events of Outbreak as depicted in The New Outbreaks
Toepick 	TBA 	TBA 	Unlocked during the events of Special Delivery
Upchuck 	Gourmand 	Peptos XI 	Unlocked by Xylene during the events of The VisitorLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Unlocked again using Master Control during the events of '"War of the Worlds: Part 1
Upgrade 	Galvanic Mechamorph 	Galvan B 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Vertebrain 	Cranvius Sapience 	Cranvius 	TBA
Water Hazard 	Orishan 	Kiusana 	Unlocked when the Ultimatrix scanned Bivalvan during the events of Fame
Way Big 	To'kustar 	Cosmic Storm 	Unlocked by Azmuth during the events of Ben 10: Secret of the OmnitrixLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1Unlocked again using Master Control during the events of '"War of the Worlds: Part 1
Whampire 	Vladat 	Anur Vladias 	Unlocked when the Omnitrix scanned Lord Transyl during the events of The Vampire Strikes BackLocked after Ben and Rook returned to the present, as their trip to the Anur System was erased from their personal history
Wildmutt 	Vulpimancer 	Vulpin 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Wildvine 	Florauna 	Flors Verdance 	Unlocked during the events of Camp FearLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
XLR8 	Kineceleran 	Kinet 	One of the original ten aliens unlockedLocked when the Omnitrix recalibrated in Ben 10 Returns: Part 1
Zerox 	Clode~Hinc 	Similidem 	TBA