Humungousaur small
General Information
Species Vaxasaurian
Home Planet Terradino
Body Humanoid Dinosaur
Powers and Abilities
Abilities Enhanced Strength
Enhanced Durability
Enhanced Agility
Enhanced Jumping
Size Alteration
Powerful Roar
Weaknesses Electricity Vulnerability
Large Size
Used By Ultimate Ben 10
Ben 10'000 (fusions)
Ultimate Ben 10'000
Gwen 10
Appears in Death of Ben 10
Humungousaur is the Omnitrix's DNA sample of a Vaxasaurian from the planet Terradino in Earth-1010.

His evolved form is Ultimate Humungousaur.


Humungousaur is about 12 feet tall and can grow bigger at will, up to about 60 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 shoulders three plates separate and grow, giving him a more ferocious look. His arms do something similar. His skin is hard, brown, and a sort of beige colour and he has a somewhat humanoid body. Humungousaur wears the Omnitrix symbol on his chest.

Powers and Abilities

Humungousaur's primary asset is his impressive strength, which at it's best is capable of lift a To'kustar off of the ground.

His leathery hide is very thick, capable of deflecting small arms fire with ease and even withstand heavy impacts.

He can increase his body size and mass drastically, which in turn boosts his strength and durability. His minimum size is his default (about 12 feet tall) and his maximum is upwards of 60 feet tall. Increasing his size causes changes in his body, as described above in the appearances section.

Humungousaur is surprisingly agile for his size, capable of somersaults and slide tackles.


His large size makes manipulating devices made for humans difficult even at his smallest size.

Due to his large muscle-mass, Humungousaur can easily be incapacitated by electric attacks.


Death of Ben 10

Humungousaur is seen twice in Chapter 11, used both times briefly by Ultimate Ben 10 before he turns into another form.

Gwen 10 used her Vaxasaurian form in Trials by Fire: Part 2 to attack Ollopa, however she broke her hand in the process.


Death of Ben 10

Ultimate Ben 10

  • Chapter 11 (x2, Cameo appearance both times; goes ultimate)

Gwen 10


See also

Death of Ben 10
Aaronbill3 Ben 10: Reboot Revolution
Act 1

Prologue - Chapter 2 - Chapter 3 - Chapter 4 - Chapter 5 - Chapter 6

Act 2

Chapter 7 - Chapter 8 - Chapter 9 - Chapter 10

Act 3

Chapter 11 - Chapter 12 - Chapter 13 - Chapter 14 - Chapter 15
Chapter 16: Part 1 - Chapter 16: Part 2 - Chapter 17 - Epilogue

Introduced in Act 1

Alien X - Buzzshock - ChamAlien - Chromastone - Clockwork - Diamondhead - Way Big - XLR8

Introduced in Act 2

Atomix - Armodrillo - Big Chill - Fasttrack - Goop - Gravattack - Lodestar - NRG - Snare-oh - Swampfire

Introduced in Act 3

AmpFibian - Arctiguana - Barrier Reef - Bloxx - Brainstorm - Cannonbolt - Ditto - Echo Echo - Eye Guy - Feedback
Geothermite - Ghostfreak - Gutrot - Heatblast - Hightide - Humungousaur - Jetray - Kickin Hawk - MindMatter - Sandbox
Spidermonkey - Stinkfly - Rath - Upchuck - Upgrade - Water Hazard - Wildvine

Ultimate Aliens

Ultimate Ben - Ultimate Big Chill - Ultimate Clockwork - Ultimate Echo Echo - Ultimate Fasttrack - Ultimate Gravattack
Ultimate Humungousaur - Ultimate Spidermonkey - Ultimate Upgrade

Fusion Aliens

Arctomix - Atomisaur - Big X - Camomech - Charmedge - Diamondactyl - Ectograde - Feedback Attack - Gecko Gecko
Gravattomix - Jawful - Snare-Chill - Tickin' Clock - XLRay - XLRtrack

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