Ben 10 Aliens

Ben 10 Classic (Original Series)

• Artiguana
• Blitzwolfer
• Buzzshock
• Cannobolt
• Diamondhead
• Ditto
• Eye Guy
• Eon
• Four Arms
• Frankenstrike
• Ghostfreak
• Grey Matter
• Heatblast
• Ripjaws
• Snare-oh
• Stinkfly
• Upchuck
• Upgrade
• Way Big
• Wildmutt
• Wildvine
• XLR8

Ben 10 Alien Force

• Alien X
• Big Chill
• Brainstorm
• Chromastone
• Echo Echo
• Goop 
• Humungousaur
• Jetray
• Lodestar
• Naonomech
• Rath
• Spidermonkey
• Swampfire

Ben 10 Ultimate Alien

• AmpFibian
• Armodrillo 
• ChamAlien
• Clockwork
• Eatle
• Fastrack
• Jury Rigg
• NRG
• Shocksquatch
• Terraspin
• Water Hazard

Ben 10 Omniverse

• Astrodactyl
• Atomix
• Ball Weevil 
• Bloxx
• Bullfrag
• Crashhopper
• Feedback
• Gravattack
• Gutrot
• Kickin' Hawk
• Mole-Stache
• Pesky Dust
• The Worst
• Toepick
• Walkatrout
• Whampire

Ben 10 Reboot

• Amalgam Ben
• Cannonbolt
• Diamondhead
• Four Arms
• Gax
• Grey Arms
• Grey Matter
• Heatblast
• Humungousaur 
• Jetray
• Overflow
• Rath
• Shock Rock 
• Slapback
• Stinkfly
• Upgrade
• Wildvine
• XLR8

Omni-Enhanced

• Omni-Enhanced Cannonbolt
• Omni-Enhanced Diamondhead
• Omni-Enhanced Four Arms
• Omni-Enhanced Grey Matter
• Omni-Enhanced Heatblast
• Omni-Enhanced Overflow
• Omni-Enhanced Stinkfly
• Omni-Enhanced Wildvine
• Omni-Enhanced XLR8

Omni-Kix Armor Aliens

• Omni-Kix Cannonbolt
• Omni-Kix Diamondhead
• Omni-Kix Four Arms
• Omni-Kix Heatblast
• Omni-Kix Humungousaur
• Omni-Kix Jetray
• Omni-Kix Rath
• Omni-Kix Shock Rock
• Omni-Kix Slapback
• Omni-Kix XLR8

Omni-Naut Armor Aliens

• Omni-Naut Heatblast
• Omni-Naut Humungousaur
• Omni-Naut Shock Rock
• Omni-Naut Jetray

Ultimate Forms

• Ultimate Humungousaur
• Ultimate Swampfire
• Ultimate Spidermonkey
• Ultimate Echo Echo
• Ultimate Big Chill
• Ultimate Cannonbolt
• Ultimate Wildmutt
• Ultimate Way Big
• Ultimate Gravattack
• Ultimate Arctiguana
• Ultimate Albedo
• Ultimate Rath

Nemtrix Predators

• Buglizard
• Crabdozer
• Hypnotick
• Mucilator
• Omnivoracious
• Panucian
• Slamworm
• Terroranchula
• Tyranopede
• Ultimate Panucian
• Vicetopus

Antitrix Aliens

• Bashmouth
• Bootleg
• Crystal Fist
• Dark Matter
• Hot Shot
• Quad Smack
• Rush
• Skunkmoth
• Thornblade
• Undertow
• Wreckingbolt