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General Information
Species Vaxasaurian
Home World Terradino
Body Humanoid Dinosaur
Ultimate Form Ultimate Humungousaur
Powers and abilities
Abilities Super Strength
Super Durability
Size Changing
Powerful Roar
Voice Actor Dee Bradley Baker

Humungousaur is the Codon Stream's DNA sample of a Vaxasaurian from the planet Terradino.


Humungousaur is about twelve feet tall and can grow bigger at will, up to about sixty feet. When he grows, his dinosaur features become more pronounced, growing Stegosaur-like plates on his back, a crest on his forehead and spikes on his tail. Also on his elbows three plates separate and grow, giving him a more ferocious look. His skin is hard, brown and a sort of beige color and he has a somewhat humanoid body. When he grows, his tail gains big spikes. Humungousaur wears the Omnitrix/Ultimatrix symbol on his chest.

Powers and AbilitiesEdit

Humungousaur possesses incredible strength and a thick layer of skin which provides vast resistance to injury. Humungousaur also has the power to increase his own body size and mass. He can grow up to 60 ft. His strength increases as he grows and he can generate his dinosaur features without changing size.

Humungousaur has proven to be durable enough to survive in space for at least a few minutes. A speeding car or low profile missiles crashing into him can't hurt him.

Humungousaur proved that he is very strong by lifting a building with out increasing his size and throwing it on Ultimate Aggregor, sending him flying in Map of Infinity.

Humungousaur is also quite agile for his size, as he could somersault onto one of the Forever Knight's battle horses in Eye of the Beholder.

Ben 10: Alien Force and Ultimate AlienEdit


Ben 10 UltiVerseEdit

He will appear soon.The enhancements made to him with the Ultimatrix 2.0 are more strength and agility.


  • Humungousaur is currently the most used alien.
  • Humungousaur is the first Ben's alien transformation in Ultimate Alien.
  • Humungousaur is the first alien used on screen by Albedo.
  • In Ben 10: Game Creator, Humungousaur's name is misspelled "Humongousaur".
  • Dwayne says Dee Bradley Baker's doesn't like doing his voice too much, as it's hard on his throat.
Ben 10: MEGA Alien
Alien X| AmpFibian| Armodrillo| Arcticguana| Atom| Benmummy| Benvicktor| Benwolf| Big Chill| Brainstorm| Buzzshock| Cannonbolt| ChamAlien| Clockwork| Colourless| Diamondhead| Ditto| Eatle| Echo Echo| Eye Guy| FuzzBall| Ghostfreak| Goop | Grey Matter| Heatblast| Hopefull| Humungousaur| Jury Rigg| Lodestar| Nanomech| NRG| Rath| Ripjaws| Spidermonkey| Spitter| Stickler| Stormfront| Swampfire| Shocksquatch| Terraspin| TriWuzzo| Upchuck| Upgrade| Water Hazard| Way Big| Wildmutt| XLR8
Additional Aliens
Headache | Snakepit | Toepick | Shellhead | Surprise Alien | Brainwave | Falconator | Organism | Unseen Alien
Re-Unlocked Aliens
Stinkfly | Fasttrack
Ultimate Forms
Ultimate Swampfire | Ultimate Big Chill | Ultimate Humongousaur | Ultimate Echo Echo | Ultimate Spidermonkey | Ultimate Cannonbolt | Ultimate Wildmutt | Ultimate Goop | Ultimate FuzzBall | Ultimate Hopefull | Ultimate Rath | Ultimate Ben | Ultimate Way Big
MEGA Forms
MEGA Rath | MEGA Spidermonkey | MEGA Cannonbolt