|Ultimate Form||Ultimate Humungousaur|
|Powers and Abilities|
Strength Enhancement (when growing)
Limited Space Survivability
Slime Spit (via cold virus)
|Voice Actor||David Kaye|
Humungousaur has his Heroes United appearance, but with a smaller torso and longer legs, making him less disproportionate. He now has black pupils, and he wears black pants with a green outline. He has black spikes running down his spine.
Ben slams down the Infinimatrix's dial and is engulfed in a green light.
As the transformation track begins playing, Ben hovers in a dark green background with light green bubbles pulsating rapidly behind him.
Powers and Abilities
Humungousaur possesses incredible strength, being able to lift and throw objects (heavy or light) up to a high altitude, even into near-earth orbit. Technically speaking, he is physically stronger than Methanosians and Crystalsapiens.
Humungousaur possesses a thick, armored hide, which has proven to be durable enough to withstand blaster fire and heavy impacts. His skin is also resistant to heat.
Humungousaur has the power to increase or decrease his own body size and mass. He can grow bigger up to about 60 feet at will, increasing his natural strength as he grows. He can also shrink down to about 10 feet.
When Humungousaur grows, his dinosaur features become more pronounced, growing Stegosauride features such as plates on his back, a crest on his forehead, and spikes on his tail. The plates on his shoulders and arms also separate and grow, giving him a more ferocious look. These features give him an extra edge in battle both defensively and offensively. Humungousaur can also generate his Stegosauride features without changing size.
Humungousaur is durable enough to survive in the vacuum of space for a few minutes and pass through dangerous force fields.
Humungousaur is capable of jumping extremely high despite his size and weight. His tail is also powerful enough to easily knock away Malware's third form.
Humungousaur is quite agile for his size.
Humungousaur has powerful jaws that are strong enough to cause pain to a Highbreed.
Humungousaur's immense size and weight make him very useful for moving against strong suction forces and powerful winds.
Humungousaur has a powerful roar, which he once used to scare away a large group of reporters.
Similar to Four Arms, Humungousaur is strong enough to create shock waves by clapping his hands together.
Also like Four Arms, when infected with a cold, Humungousaur gains the ability to spit slime.
Humungousaur's strength has a clear limit, as with such cases with moving and lifting beings or objects as heavy as Tyrannopede. Technically speaking, Humungousaur is physically weaker than Tetramands, Highbreed, and Evolved Vaxasaurians, the latter of whom is able to lift a To'kustar in record timing.
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 can be discomforted by an Aerophibian's neuroshock blasts.
Humungousaur is weak against electricity, such as that generated by an Amperi.
Being a Vaxasaurian, Humungousaur is vulnerable to being trapped by a Kaosseffexx Ultimasauria.
Humungousaur is more of a land-based alien, meaning he cannot breathe underwater.
Despite his enhanced durability, Humungousaur's feet can be badly hurt by a strong enough blow, similar to those of a human.
Despite his wind resistance, Humungousaur can still be blown off his feet if the wind is strong enough.
Like Four Arms, if Humungousaur is under the effects of a cold virus, his strength and stamina will be severely reduced.
- Humungousaur was one of the 10 aliens in Ben's new roster after the Omnitrix recalibrated in Ben 10 Returns: Part 1. He was locked upon the Omnitrix's reset at the end of War of the Worlds: Part 2.
- In Up to 11, Azmuth reunlocked Humungousaur.
- Credit to Echoson for the infobox image and the image in the gallery.
- Humungousaur was Ben's favorite alien when he was 15.