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


Humungousaur is approximately 20 feet tall. His body is somewhat humanoid and muscular with two arms and two legs. His legs are shorter than his arms. He has elephant-like feet and a lengthly lizard-like tail. His armored hide is light brown, with minor plating on his shoulders, tail, back, arms, and upper legs. He has a beige chest, abs, inner arms, and lower jaw. Dark grey, stone-like spikes, each shaped like the dorsal fin of a shark, run down his spine from the top of his neck to a black mace on the end of his tail. The mace has three spikes shaped like stalagmites, being one large spike on the middle and two smaller spikes on the sides. He has three fingers and a thumb on each hand and three black, elephant-like toes on each foot. His knee caps and finger joints also bulge out.

His square-like head is mostly hunched forward and the beige area of his neck is wrinkled. Both his lower jaw and brows are protruding while his almost human-like nose appears to be squished inward. His lips are black and have wrinkles. His teeth are yellowed and minorly fanged. He also has two green eyes with thick black outlines.

Humungousaur wears the Omnitrix symbol on his chest.

Powers and Abilities

Humungousaur possesses incredible strength, being able to easily destroy buildings surrounding him as well as hold his own against Monster Kevin (an amalgamation of the Antitrix aliens).[1]

Humungousaur possesses a thick, armored hide, which has proven to be durable enough to withstand blaster fire and heavy impacts, as well as being capable of surviving the heat of re-entry into Earth's atmosphere.

Humungousaur's tail is powerful enough to create shockwaves when he slams it against the ground, that are in turn also very strong and capable of blowing away those affected within its vicinity.

On occasions, Humungousaur's tail is able to release green energy.[2]


R1 Bashmouth (19)

Durability Limit

Humungousaur's tail can cause unintentional damage if he doesn't watch what it hits. His large size also means he's slow, is an easy target and can't fit in tight spaces.

Humungousaur is unable use his sonic attacks on soft surfaces such as mud.[3]

Whilst his hide is extremely durable, Humungousaur is still shown to suffer damage from Bashmouth's bites.[4]


Ben 10


Ben 10

Season 3

Season 4

Naming and Translations

Language Name Origin
Russian Гумангозавр From Humungousaur translated to Russian


  • Humungousaur was first revealed to appear in the reboot on the packaging for the Season 3 Omnitrix toy.
  • The black spiked ball on the end of his tail is similar to Ultimate Humungousaur's from the classic continuity.
  • Humungousaur replaces Wildvine in the active playlist.[5]
  • Humungousaur's name was given to him by a female toddler. Names considered by Ben include Gigantigecko, Iguana Monster, Roar Thing and Mega-Stega Dude.[6]
  • Unlike his Classic Continuity counterpart, Humungousaur cannot alter his size.[DR 1]
  • If Humungousaur were to battle the Hulk, he would not stand a chance. Duncan Rouleau compares his strength to that of Sasquatch from Alpha Flight.[DR 2]
  • Humungousaur's back spikes pay homage to the kaiju Godzilla from the Toho Monster series.


Crew Statements

Duncan Rouleau

Original Aliens
CannonboltDiamondheadFour ArmsGrey MatterHeatblastOverflowStinkflyUpgradeWildvineXLR8
Introduced in Season 1 Introduced in Season 2 Introduced in Season 3 Introduced in Season 4
Gax RathShock Rock HumungousaurSlapback Jetray
Omni-Enhanced Aliens
CannonboltDiamondheadFour ArmsGrey MatterHeatblastOverflowStinkflyWildvineXLR8
Omni-Kix Aliens
CannonboltDiamondheadFour ArmsHeatblastHumungousaurJetrayRathShock RockSlapbackXLR8
Fusion Aliens Not In The Show Non-Canon
Amalgam BenGrey ArmsXLRArmBlastDiamondHeat Mole-Stache Banana AlienHot Dog AlienOmnitrix Glitch FusionRath ArmsShock Blast

Start a Discussion Discussions about Humungousaur (Reboot)

  • Reboot Nerfed Humungousaur

    4 messages
    • I (as a scientist) actually do not like this size alteration power, because changes of mass are very difficult processes for a relativly sim...
    • Evfnye.misx70 wrote:I (as a scientist) actually do not like this size alteration power, because changes of mass are very difficult processes fo...
  • witch form of humungousaur is your fav? and why?

    6 messages
    • R&CFOREVER wrote:Does Ultimate Humungousaur count ? yes
    • Nicholas Blaschke wrote:Reboot  why
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