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34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity

The Sentient Ultimate Humungousaur was trapped inside the Ultimatrix as Ultimate Humungousaur until he was freed by Azmuth and Ben.


The sentient Ultimate Humungousaur looked just like Negative Ultimate Humungousaur, except he lacked the evolved Ultimatrix symbol on his chest.


The sentient Ultimate Humungousaur was extremely merciless and ruthless, as observed when he repeatedly punched the red robot even when he gave up. During a therapy session with Dr. Borges, it is revealed that his mother tried to eat him before he hatched, which might be the cause of his unbridled rage and aggression.[2]

Despite his rage, the sentient Ultimate Humungousaur is shown to admit to his mistakes, as he did with Ben, after the latter sacrificed himself to release him and the other Ultimates from the Ultimatrix.[2]


Ultimate Alien

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In The Ultimate Sacrifice, the sentient Ultimate Humungousaur, along with the other Ultimates (except Ultimate Wildmutt and Ultimate Way Big), convinced Ben to sacrifice himself so they could be free from the Ultimatrix. Ben tried to, but the Ultimatrix spared his life and freed the Ultimates for his heroic actions. Azmuth took them to his lab[ES 1] where they could live freely after the Sentient Ultimates reconciled with their former "jailer".


Sometime before The More Things Change: Part 1, the sentient Ultimate Humungousaur was hunted and killed by Khyber, who added his helmet to his trophy collection on his ship.[1][DJW 2][note 1]

Powers and Abilities

The sentient Ultimate Humungousaur could transform his hands into bio-gatling guns that shot missiles,[note 2] which could deal major damage, and could even damage and knock out a Petrosapien.[3] The sentient Ultimate Humungousaur could also shoot out bullets.[4]

The sentient Ultimate Humungousaur was exponentially stronger than a regular Vaxasaurian, even at their full size. He was strong enough to lift and throw a To'kustar in record timing[2] and rupture the ground with an earthquake by just punching it.[5]

The sentient Ultimate Humungousaur's tail was powerful enough to knock away opponents, such as Carl Nesmith, with ease.[6] He also had a mace on his tail for some extra damage.

The sentient Ultimate Humungousaur had impeccable durability, thanks to his hard-armored body and muscular bulk. This was best demonstrated in Negative Ultimate Humungousaur's fight against Atomix, where he was able to withstand his Nuclear Punch and an atomic blast.[7]

The sentient Ultimate Humungousaur had both great speed and great reflexes, as Ultimate Humungousaur was able to easily dodge attacks from Antonio, who has comparable strength.[8]


The sentient Ultimate Humungousaur lacked the Vaxasaurian's ability to change his size.[DM 2][DM 3][DM 4]

The sentient Ultimate Humungousaur's size made moving through areas designed for smaller species difficult.[9]

Like Vaxasaurians, the sentient Ultimate Humungousaur was vulnerable to electricity, such as that generated by a Conductoid.[3]


Ultimate Alien

Season 3


  • Sentient Ultimate Humungousaur mother tried to eat him.
  • Sentient Ultimate Humungousaur was the first Ultimate to rebel against Ben. He appears to be the leader of the Sentient Ultimate Forms.


  1. 1.0 1.1 On Khyber's Ship, an Evolved Vaxasaurian helmet is among his trophies.[1] The model sheet corresponding to it is labelled as "Ultimate Humungousaur Helmet".[DJW 1]
  2. In Alien Force and Ultimate Alien, Ultimate Humungousaur's missiles were depicted as kinetically unstable bone fragments.[DM 1][merch 1] In Omniverse, the missiles have been changed to better resemble traditional missiles.


Crew Statements

Dwayne McDuffie

Derrick J. Wyatt

Eugene Son


  1. Ben 10 Ultimate Alien: Escape from Aggregor DVD; file
Prime Timeline
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