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Ultimate Humungousaur is the Ultimatrix's artificially evolved DNA sample of a Vaxasaurian.


Ben as Ultimate Humungousaur

Ultimate Humungousaur is a humanoid dinosaur-like creature, with dark blue armor similar to that of an Ankylosaurus. He is more burly and muscular than his pre-evolved form.

He has camo green skin and his helmet[DJW 1] has three silver spikes running down the top, and two downward pointing black horns on the sides. His back armor has long spikes running down each side, his plated chest and torso are dark blue with five spikes on each end and his tail has a blue mace on the end of it, with silver spikes.

Ultimate Humungousaur's knuckles have silver barrels on them, which he can transform into four-barreled missile launchers. He has black claws.

Ultimate Humungousaur wears the evolved Ultimatrix symbol on his chest.

Albedo as Negative Ultimate Humungousaur

In Alien Force, Negative Ultimate Humungousaur looked exactly like Ben's Ultimate Humungousaur, except his eyes and Ultimatrix symbol were red.

In Omniverse, Negative Ultimate Humungousaur has greyish-tan skin, his spikes are yellowish-brown, and his shoulder sport armor plating. His overall appearance is more techno-organic, almost like a cyborg. He has exposed metallic tubes on his skin and black "veins" on his skin. He wears the Ultimatrix symbol on his chest.

Powers and Abilities

Ultimate Humungousaur is exponentially stronger than Humungousaur, even when at full size. He is strong enough to lift and throw a To'kustar in record timing[1] and make a giant crater in the ground by punching it.[2]

Ultimate Humungousaur has very durable armor plating throughout his body, giving him enhanced durability combined with his thick skin.

Ultimate Humungousaur can transform his hands into bio-gatling guns that shoot missiles,[note 1] which deal major damage and can even damage and knock out a Petrosapien.[3]

Ultimate Humungousaur's tail has a mace-like structure at the tip, which can be used as a flail.

Like Humungousaur, Ultimate Humungousaur can survive in the vacuum of space for a short time and can create shock waves by clapping his hands.


Ultimate Humungousaur lacks his devolved counterpart's ability to change his size.[DM 2][DM 3][DM 4]

Ultimate Humungousaur's missiles can be neutralized by Conductoids.[3]

Like Humungousaur, Ultimate Humungousaur is vulnerable to electricity, such as that generated by a Conductoid.[3]

Despite his enhanced strength, Ultimate Humungousaur can still get muscle cramps.[4] Technically speaking, he is physically weaker than Atomix's species.[5]

Ultimate Humungousaur can be harmed by magic, as demonstrated with his sentient counterpart.[1]


Alien Force

Ultimate Alien


Future (Ultimate Alien)


Video Games

Ben 10 Ultimate Alien: Cosmic Destruction

Ultimate Humungousaur is a playable alien in Cosmic Destruction, on all platforms. But only during a brief period of time during the first level, the Catacombs, against Vulkanus' Pickaxe minions. Ultimate Humungousaur can do a stronger version of Humungousaur's shoulder charge and punch the ground to create large shockwaves. He can shoot missiles.

Ben 10: Galactic Racing

Ultimate Humungousaur is a playable racer in the game on all consoles.

Punch Time Explosion

Ultimate Humungousaur is Ben's Punch Time Explosion in the game.

Project Exonaut

Ultimate Humungousaur is a playable Exosuit of the Atlas Brigade on Project Exonaut. His Weapon Mod, similar to Finn, increases the Tridex's Shots to five instead of just three. Ultimate Humongosaur is available for purchase at level 10 for 750 coins.


Ultimate Humungousaur is a playable character.

Toon Football

Ultimate Humungousaur is a playable character. He is the third Ultimate form in the game.

Naming and Translations

Language Name Origin
Arabic هيومنجوسور الأقصي Humengosur Al Aqsa'
Bulgarian Ултра Човекозавър From ултра, ultra, and Човекозовър, Humungousaur
Chinese 终极神力暴龙 From 终极 (Zhōng Jí), ultimate, 神力 (Shén Lì), powerful, and 暴龙 (Bào Lóng), T-Rex
Dutch Ultieme Gigantosaurus From ultieme, ultimate, and gigantosaurus, humungousaur
French Ultimate Énormosaure From ultimate, énorme, enormous/humongous, and -saure, -saur
German Ultimativer Gigantosaurus From ultimativ, ultimate, and gigantosaurus, gigantous and dinosaur
Greek Απόλυτος Τεραστιόσαυρος From απόλυτος, ultimate, and τεραστιόσαυρος, humungousaur
Indonesian Ultimate Humonggosaurus From ultimate and humonggosaurus, humungousaur
Italian Ultra Omosauro from ultra, and omosauro, humungousaur
Polish Ostateczny Gigantozaur From ostateczny, ultimate, and gigantozaur, humungousaur
Portuguese (Br) Enormossauro Supremo From enormo, enormous, ssauro, abbreviation of dinosaur, and supremo, supreme
Romanian Umangozaur X From Umangozaur, Humungousaur, and X, ultimate
Russian Ульти Гумангозавр
Высший Гумангозавр
From the original English name
From the original name
Spanish (HA) Humungosaurio Supremo/Ultimate Gigantosaurio From Humungosaurio, humungousaur and supremo, ultimate
Spanish (Spain) Humungosaurio Supremo/Ultimate Gigantosaurio From humungosaurio, humungousaur, and supremo, ultimate
Tagalog Ultimeyt Yumongusor From ultimeyt, ultimate and yumongusor, humungousaur
Turkish Ultimate İnsanazor From Ultimate, ultimate, and İnsanazor, humungousaur


  • Negative Ultimate Humungousaur is the first Ultimate alien to appear on-screen.
  • Ultimate Humungousaur is the only Ultimate form that appeared in three different shows in the Classic Timeline.
  • Ultimate Humungousaur was the Alien of the Month in April 2011.
  • Ultimate Humungousaur's shell resembles Bowser's shell from the Mario franchise.
  • Ultimate Humungousaur was supposed to appear in Catch a Falling Star, serving the same purpose his devolved form did in the final version of the episode.[AA 1]


  1. In Alien Force and Ultimate Alien, Ultimate Humungousaur's missiles were depicted as kinetically unstable bone fragments.[DM 1] In Omniverse, the missiles have been changed to better resemble traditional missiles.


Dwayne McDuffie

Derrick J. Wyatt

Aluir Amancio

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
Future Aliens SandboxShellheadSnakepit
Ultimate Aliens AlbedoArctiguanaBig ChillCannonboltEcho EchoGravattackHumungousaurRathSpidermonkeySwampfireWay BigWildmutt
Fusion Aliens Atomic-XBig ChuckCrashockerDiamond MatterFourmungousaurHeat JawsHumungoopsaurStink ArmsUprigg
Concept Fusion Aliens GravadactylXLRG
Other Aliens in Official Media AntigraviteslaBob the BlobCartoon Network AlienEon (Retconned)MoyoInvinciblePlantapocalypsePortalerRocksShadowmanSquidstrictorStretcheleo