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


Ben as 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 color in its inner side and he has a somewhat humanoid body. Humungousaur wore the Omnitrix/Ultimatrix symbol on his chest.

In Video Games, Humungousaur wore a blue motion capture suit.

In Heroes United, the plates on his chest ended in spikes and he had spikes above his eyes.

In Omniverse, Humungousaur wears black briefs with a white waistband, and a green and black sash across his chest (going from his right shoulder to the left side of his lower back) containing the Omnitrix symbol. Humungousaur now has grey fingernails instead of brown, a slightly bigger chin, green eyes in the same hue of his sash, a shorter build and his nose has shifted to his forehead.

Albedo as Negative Humungousaur

In Good Copy, Bad Copy, Negative Humungousaur looked exactly like Ben's Humungousaur. In The Final Battle: Part 1, Negative Humungousaur had red eyes and his Ultimatrix symbol was red as well.

In Omniverse, Negative Humungousaur has a darker skin color, creamy-white inner side and a red Ultimatrix sash across his chest in the opposite direction as Ben's Humungousaur. His eyes are the same red as his sash.

Alpha as Humungousaur

Humungousaur had dark green skin, some horns, sharp teeth, and red eyes. He wore a red fake Ultimatrix symbol on his chest, and there were red lines spread across his body.

Powers and Abilities

  • Enhanced Strength
  • Size Alteration
  • Enhanced Durability
  • Stegosauride Features
  • Spiked Tail
  • Limited Space Survivabilty
  • Powerful Roar

Humungousaur possesses incredible strength, being able to lift and throw a To'kustar and at base size,[1][ES 1] and throw objects (heavy or light) up to a high altitude, even into near-earth orbit.

Humungousaur possesses a thick, armored hide, which has proven to be durable enough to withstand blaster fire and heavy impacts.

Humungousaur has the power to increase or decrease his own body size and mass. He can grow up to a maximum of 60 feet and his strength increases as he grows. He can also shrink down to about 10 feet.[DM 1]

Humungousaur can generate his Stegosauride features (plates and spikes on his spine and tail) without changing size.[DM 2] These features give Humungousaur an extra edge in battle both defensively and offensively.

Humungousaur is durable enough to survive in the vacuum of space for a few minutes[2][3] and pass through dangerous force fields.[4]

Humungousaur's tail is powerful enough to easily knock away Malware's third form.[5]

Once Humungousaur charged and rammed Vilgax while running on all fours, in a similar fashion to a bull or rhinoceros.[6]

Humungousaur is quite agile for his size, as he could somersault onto one of the Forever Knights' battle horses,[7] perform a slide tackle,[8] and be able to evade attacks while jumping.[5]

Humungousaur's immense size and weight make him very useful for moving against strong suction forces[9] and powerful winds.[10]

Humungousaur has a powerful roar, which he once used to scare away a large group of reporters.[11]

Similar to Four Arms, Humungousaur is strong enough to create shock waves by clapping his hands together.[MW 1]


Humungousaur's strength has a clear limit, as with such cases with moving and lifting beings or objects as heavy as Tyrannopede, whose sheer weight proved a challenge for Humungousaur to manage.[12]

Humungousaur is very slow and combined with his naturally large physique, it makes him a very easy target for enemy attacks. Even his base size makes it impossible for him to fit into small spaces.

Humungousaur is weak against electricity.[13]

Humungousaur can be harmed or discomforted by a Methanosian's fireballs, as well as an Aerophibian's neuroshock blasts.[14]

Despite his durability, Humungousaur's feet can be badly hurt by a strong enough blow, similar to those of a human.[15]



Plant Clone


Doom Dimension (Volume 1)


Season 1
Season 2
Season 3
Season 1
Season 3
Season 3
Season 3

Season 1
Season 2
Season 3
Plant Clone
Season 3
Season 3
Season 3

Video Games

  • Humungousaur in Vilgax Attacks and Cosmic Destruction
  • In The Rise of Hex

Ben 10: Alien Force

Humungousaur is a playable alien character in all versions of the game.

Nintendo Wii, PlayStation 2 and PlayStation Portable Versions

Humungousaur is initially unavailable, but is unlocked at the beginning of the Rural Rumble level.

Humungousaur is able to use his incredible strength to smash open gates, pick up a tractor and throw it at a wall, remove a massive metallic lid and activate pressure sensitive platforms by standing on them. Humungousaur is also immune to freezing weaponry.

Humungousaur grows to full size at segments of the A Change in the Weather level to destroy three Highbreed Weather Arrays.

Humungousaur is vital for progression on the Rural Rumble, Running on Autopilot and A Change in the Weather levels of the game.

Nintendo DS Version

Humungousaur and Swampfire are the only aliens available on Ben's arsenal at the beginning of the game.

Humungousaur is able to break down weak walls.

Humungousaur is vital for progression on the Warehouse 2-3 level of the game.

Ben 10 Alien Force: Vilgax Attacks

Humungousaur is a playable alien character in the game.

Xbox 360, Nintendo Wii, PlayStation 2 and PlayStation Portable Versions

Due to the Omnitrix rebooting after Ben's abuse of the quick-change feature during his battle with an animated Mr. Smoothy mascot, Humungousaur, along with Swampfire, Big Chill, Spidermonkey and Cannonbolt were the only aliens available on Ben's arsenal upon his arrival on Vulpin.

Humungousaur can use his incredible strength to destroy obstacles, such as vehicles and weak walls, open partially sealed gates, drag large crates to activate pressure sensitive platforms and pull levers for various purposes. He can also do a shoulder charge and make shockwaves by slamming the ground.

Earthquake is an unlockable combo move for Humungousaur.

Humungousaur is vital for progression on the Bellwood, Terradino, Encephalonus IV, Anur Phaetos, Mor' Otesi and Null Void levels of the game.

Nintendo DS Version

Humungousaur and Spidermonkey are reunlocked upon Ben's arrival on Terradino.

Humungousaur is able to destroy temple columns, pillars and other rock formations.

Humungousaur is vital for progression on the Terradino, Encephalonus IV and Null Void levels of the game.

Ben 10 Alien Force: The Rise of Hex

Humungousaur is a playable alien character in the game.

Due to the Omnitrix sorting out after Ben fiddled with it, Humungousaur was temporarily locked. Humungousaur was reunlocked at the beginning of Level 3.

Humungousaur is able to use his incredible strength to carry crates or boulders in order to activate pressure sensitive platforms, as well as break down weaker walls. While doing so, Humungousaur increases his size and gains his signature bone plates and spikes.

Humungousaur's large size prevents him from accessing small areas.

Ben 10 Ultimate Alien: Cosmic Destruction

Humungousaur is a playable alien character in the game.

Humungousaur is vital for progression on The Catacombs, Devil's Tower, and The Final Battle levels of the game.

Naming and Translations

Language Name Origin
Arabic هومنجاسور Transliteration: houmungasaur, mispronunciation of the original name
Bulgarian Човекозавър/Čovekozavŭr From човек, human and -завър/-zavŭr, -saur
Chinese 神力暴龙 From 神力 (Shén Lì), powerful and 暴龙 (Bào Lóng), T-Rex
Croatian Ljudosaur/Људосаур From Ljudo/Људо, people or human, and -saur, a suffix for dinosaur
Dutch Gigantosaurus From gigantous and dinosaur
French Énormosaure From énorme, enormous and -saure, -saur
German Gigantosaurus From gigantisch, gigantous and dinosaur
Greek Τεραστιόσαυρος From τεράστιος, huge and δεινόσαυρος, dinosaur
Hebrew יומוזאור From Human and dinosaur
Hungarian Óriásszaurusz From óriás, giant and -szaurusz, -saur
Indonesian Humonggosaurus From the original name
Italian Omosauro From Homo, human being in Latin, and sauros, lizard in Latin
Korean 자이언트사우루스 From 자이언트(giant), and 사우루스(saurous)
Norwegian Enormosaur From enormous and dinosaur
Polish Gigantozaur From gigant, giant and dinosaur
Portuguese (Br) Enormossauro From enorme, enormous and dinossauro, dinosaur.
Romanian Umangozaur From uman, human, and -zaur, a suffix for dinosaur
Russian Гумангозавр From Humungousaur translated to Russian
Serbian Ljudosaur/Људосаур From Ljudo/Људо, people or human, and -saur, a suffix for dinosaur
Spanish (HA) Humungosaurio Humungousaur translated to Spanish; pronounced /ʊmʊngoʊ'saʊɾio/ (All That Glitters), /ʊmʊngo'sauɾio/ (normally) and /ʊnmʊngo'sauɾio/ (rarely).
Spanish (Spain) Gigantosaurio From Gigantous and Dinosaur
Swedish Gigantosaur From gigant, gigantic and dinosaur
Tagalog Yumongusor The Tagalog version of Humongusaur
Turkish İnsanazor


His name is a portmanteau of "Humongous," meaning "big," referencing his size, and "dinosaur."


  • In Ben 10 Returns: Part 2, All That Glitters, and Inside Man, Humungousaur's voice was electronically edited to sound deeper.
  • Humungousaur is the first alien used in Ultimate Alien.
  • Humungousaur was the first alien to go ultimate on-screen.[16]
  • In Omniverse, as a running gag in Season 1, Ben tried and failed to turn into Humungousaur on numerous occasions before finally transforming into him in Of Predators and Prey: Part 2, the final episode of the season.
  • Out of all transformations, Humungousaur is the alien used by the most characters other than Ben, having been used by Albedo, Azmuth, Vilgax's Bioids, Plant BenAlpha, and Gwen.
    • Humungousaur is also the most used transformation in the entire Classic Continuity, appearing a total of 89 times.
  • Humungousaur's icon replaced Echo Echo's in the Season 5 opening of Omniverse.
  • Dee Bradley Baker doesn't like doing Humungousaur's voice too much, as it's hard on his throat.[DM 3][DJW 1][17]
  • His sash in Omniverse is similar to Monsieur Mallah's from Teen Titans.


Crew Statements

Eugene Son

Dwayne McDuffie

Matt Wayne

Derrick J. Wyatt

  1. link unavailable

See Also

Introduced in Ben 10 ArctiguanaBlitzwolferBuzzshockCannonboltDiamondheadDittoEye GuyFour ArmsFrankenstrikeGhostfreakGrey MatterHeatblastRipjawsSnare-ohSpitterStinkflyUpchuckUpgradeWay BigWildmuttWildvineXLR8
Introduced in Alien Force Alien XBig ChillBrainstormChromastoneEcho EchoGoopHumungousaurJetrayLodestarNanomechRathSpidermonkeySwampfire
Introduced in Ultimate Alien AmpFibianArmodrilloChamalienClockworkEatleFasttrackJuryriggNRGShocksquatchTerraspinWater Hazard
Introduced in Omniverse AstrodactylAtomixBall WeevilBloxxBullfragCrashhopperFeedbackGravattackGutrotKickin HawkMole-StachePesky DustThe WorstToepickWalkatroutWhampire
Ultimate Aliens Ultimate AlbedoUltimate ArctiguanaUltimate Big ChillUltimate CannonboltUltimate Echo EchoUltimate GravattackUltimate HumungousaurUltimate RathUltimate SpidermonkeyUltimate SwampfireUltimate Way BigUltimate Wildmutt
Fusion Aliens Atomic-XBig ChuckCrashockerDiamond MatterFourmungousaurHeat JawsHumungoopsaurStink ArmsUprigg
Unseen Aliens Decagon VreedleRocksSquidstrictorVentrilosquid
Future Aliens SandboxShellheadSnakepit
Retconned Eon
Non-Canon Cartoon Network AlienPortalerAntigraviteslaBob the BlobPlantapocalypseThriller Whale

Start a Discussion Discussions about Humungousaur (Classic)

  • humungousaur vs four arms

    21 messages
    • considering I've seen Luma fight. Humungousuar may be in for more than we know since fourarms defeated her
    • I think in an average fight Humungosaur would win - He has a chance of winning in my opinion even without growing in size - I can imagine foura...
  • 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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