Ben 10 Aliens
Starter Aliens: DiamondHead, Four Arms, GhostFreak, Grey Matter, HeatBlast, RipJaws, StinkFly, UpGrade, WildMutt, XLR8.
Additional Aliens: BenMummy, BenVicktor, BenWolf, CannonBolt, Ditto, Eon, Eye Guy, UpChuck, Way Big, WildVine,
Future Aliens: Spitter, BuzzShock, Arcticguana, Snakepit, Sandbox, Shellhead, Toepick, Atomix.
Ben 10: Alien Force
Alien X, Big Chill, BrainStorm, ChromaStone, Echo Echo, Goop, Humongousaur, Jet Ray, SpiderMonkey, SwampFire.
Fanon:Omegatrix Aliens
Starter Aliens: Tundra, Boom-Box, Over-Ride, Deathcall, Velocity, Voltage, BadSeed, Odorbug, Hugeguns, Smellhound.
Additional Aliens: Armiroller, Hack-A-Saur, Airstreak, Chamillion, Hot-Head, Roadrage, self-destruct, Spyder, Googleyes, Shelldome.
X Aliens 1: Bulldoze, Card-Toss, Halo, Defender, Downpour, MixMaster, Fire-Wire, KnuckleBuster, Multi, Glyder.
Contact Aliens: Wolfboom, Pharoah, Boltenstien, Crabclaw, Impulse, Anti-Hero, Loudmouth, Screature, Flashback, Timeout.
X Aliens 2: Horndrill, Fusion, Gorgoneye, Grenade, Diamondshard, Mini-Me, Slimeball, Razorbite, Giant Guy, Bladeskate, Webswinger.
Future Aliens: Polar Moth, Enormousaur, Anaconda, Beam, Tri-Mind, Crystalight, Flareweed, Brainbolt, Fungus, Gammaray.
Evolved Aliens: Lightbulb, Catclaw, Terraraven, Combustion, Leakage, Rainbowwave, Iceberg, Bodyswap, Gatorbite, Birdbrain, Rocket, Degree, Flytrap, Tailwhack, Barkhunter, Enormouscle, B-Sting, Copycat, B-Oguy, Stratos, Acidbreath, Spellbind, Pathfinder, Hulkarms, Target, Soulsucker, T-Wrecks, Blackflame, Zombieater, Megabyte, Hay-Wire.
Final Aliens: Elequake, Bounceback, Shadowseeker, Pineshot, Painkiller, Afronova, Forcedown, Dragonswoop, Beastfang, Boom-Bomb.
Re-Calibrated Aliens: Websurf, Blackmist, Stormcloud, Backfire, Chloroplant, Psychopath, Gluestick, Plus And Minus, Cometrain, Animator.
Additonal Aliens 2: Soundpulse, Octotitan, Longneck, Amplifier, Bonecracker, Anti-DragoKnight, Expander, Snowski, Reptilaser, Hornram..
Unlocked Aliens: Snoutfire, Scout, Inkjet, Wingcutter, Sharpedge, Spikeball, Crystalogre, Junkytrash, Pickaxe, Goldmine.
X Aliens 3: Rockbomb, Blowhole, Dustbunny, Anti-Paladin, Lunarwolf, Ironquake, Silverblade, Crystalball, Terrajaw, Wilderbeast.
Upgraded Aliens: Forestfire, Forcefield, Brainiac, Angelwings, Dummy, Dirtmole, Thunderbolt, Tidalwave, Foureyes, Fortress.
Friends Aliens: Anti-Berserker, Anti-Defender, Anti-Fighter, Anti-Magician, Anti-Master, Anti-Soldier, Anti-X, Knockout, Heavyhit, Blastback.
X Aliens 4: ShadowBeast, Death Harmony, Fishfrenzy, Jukebox, Manipulator, Fireweaver, Roarfrost, Lightningrod, Woodroot, Outbreak.