Ultimate Humungousaur

Ultimate Humungousaur is the evolved form of Humungousaur.

Ben as Ultimate Humungousaur
Ultimate Humungousaur is an ankylosaurus-like creature, being about 20 feet tall. Ultimate Humungousaur is green and he has spikes on his head, which are silver.

On the sides of his face, there are black spikes, pointing down. Ultimate Humungousaur possesses a dark blue, spiked shell. His chest and torso is dark blue with spikes on them. Ultimate Humungousaur's tail has a blue mace on the end of it, with silver spikes.

Ultimate Humungousaur's knuckles have barrels on them, which he can transform into four-barreled missile launchers at will.

Ultimate Humungousaur wears the evolved Ultimatrix symbol on his chest.

Albedo as Negative Ultimate Humungousaur
In Omniverse, Negative Ultimate Humungousaur has grey/tan skin instead of green. He has blue shells on his shoulders and his spikes are brown. Also, the spikes on his evolved Ultimatrix symbol are now vein-like and longer, similar veins appear on his arms. His helmet is blue with 3 spikes on the top, and 2 on the bottom and resembles a triceratops more than an ankylosaurus. When using the cannons, he now has red muscles.

Powers and Abilities
Ultimate Humungousaur is exponentially stronger than full-sized Humungousaur and is strong enough to lift and throw Way Big with ease. He has also proven to be strong enough to flatten a Red Robot's head with a few punches.

Ultimate Humungousaur has a very durable shell.

In Cosmic Destruction, Ultimate Humungousaur can do a stronger version of Humungousaur's shoulder charge and punch the ground to create large shockwaves.

As a result of millions of simulated battles over the millennia, Ultimate Humungousaur's genetic evolution allows him to transform his hands into bio-gatling guns that shoot kinetically unstable bone fragments as missiles at opponents which deal major damage. In Omniverse, his hands now spin like real gatling guns when launching the missiles and the color of the bone fragments is now golden.

Ultimate Humungousaur's tail has a mace-like structure which can be used as a flail, as shown in his fight with Sir George.

Weaknesses
Ultimate Humungosaur lacks his devolved counterpart's ability to change his size, due to the Ultimate aliens being combat-based. His missiles can also be absorbed as seen in A Fistful of Brains.

Ultimate Humungousaur is also vulnerable to electricity, as seen in A Fistful of Brains.

Alien Force

 * In The Final Battle: Part 1,
 * Negative Ultimate Humungousaur defeated Humungousaur.
 * In The Final Battle: Part 2,
 * Negative Ultimate Humungousaur was defeated by Vilgax's bioids as an army of Humungousaurs.

Ultimate Alien

 * Ben first used Ultimate Humungousaur in Too Hot To Handle,
 * Ultimate Humungousaur battled P'andor, Buzz, Surgeon and Hammer.
 * In Hero Time,
 * Ultimate Humungousaur battled Overlord.
 * In Where the Magic Happens,
 * Ultimate Humungousaur battled Adwaita.
 * In The Enemy of My Enemy,
 * Ultimate Humungousaur was defeated by Ultimate Kevin.
 * In Girl Trouble,
 * Ultimate Humungousaur defeated Antonio.
 * In Ben 10,000 Returns,
 * Ultimate Humungousaur's powers were used twice by Ultimate Ben.
 * In The Ultimate Sacrifice,
 * Ultimate Humungousaur defeated the Red Robot, but Sentient Ultimate Humungousaur takes over Ben's personality.
 * In Solitary Alignment,
 * Ultimate Humungousaur battled George until they made an agreement.
 * In Couples Retreat,
 * Ultimate Humungousaur battled Darkstar.
 * In Night of the Living Nightmare,
 * In a dream, Ultimate Humungousaur was seen confronting Albedo.

Omniverse

 * In The Ultimate Heist,
 * Negative Ultimate Humungousaur attacked Ben, and was pinned down by Eye Guy.
 * In A Fistful of Brains,
 * ​Negative Ultimate Humungousaur defeated Crashhopper and Diamondhead, but was defeated by Feedback.
 * In For a Few Brains More,
 * ​Negative Ultimate Humungousaur defeated Bloxx but was quickly defeated by Atomix.

Appearances
{{scroll box
 * content=

Ben 10: Alien Force

 * The Final Battle: Part 1 (first appearance; used by Albedo)
 * The Final Battle: Part 2 (used by Albedo)

Ben 10: Ultimate Alien

 * Too Hot To Handle (first re-appearance; used by Ben Tennyson)
 * Hero Time
 * Where the Magic Happens
 * The Enemy of My Enemy
 * Girl Trouble
 * Ben 10,000 Returns (x2; powers used by Ultimate Ben)
 * The Ultimate Sacrifice
 * Solitary Alignment
 * Couples Retreat
 * Night of the Living Nightmare (Albedo's dream; cameo)

Albedo

 * The Ultimate Heist (first re-appearance)
 * A Fistful of Brains
 * For a Few Brains More}}

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 against Vulkanus's Pickaxe minions.

Ben 10: Galactic Racing
Ultimate Humungousaur is a playable racer in this game on all consoles. His offensive move is Handy Rockets, where he fires a wave of rockets from his hands, his defensive move is Plated, where he sprouts armour plates on his kart, and his ultimate omni move is called Outta My Way!, where he punches the ground at the back of his kart to speed up.

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

Toys

 * 4" Alien Collection Ultimate Humungousaur
 * 6" DNA Alien Heroes Ultimate Humungousaur
 * 4" DX Alien Collection Ultimate Humungousaur
 * Comic pack with Aggregor
 * Ultimate Humungousaur Alien Arm
 * 4" Alien Collection Gold Ultimate Humungousaur
 * 4" Alien Collection Ultimate Humungousaur with mini alien
 * 4" Alien Collection Haywire Collection Ultimate Humungousaur
 * Alien Creation Transporter Rath and translucent Ultimate Humungousaur

Trivia

 * Ultimate Humungousaur is the first ultimate alien to appear on-screen, as well as one of two that appeared in the Alien Force series finale (the other being Ultimate Swampfire). Ultimate Humungousaur is also the first Ultimate to appear in Ben 10: Omniverse.
 * In Cartoon Network's online game TKO, Ultimate Humungousaur is a playable character.
 * Ultimate Humungousaur's shell resembles Bowser's shell from the Mario series.
 * According to the Cartoon Network Ben 10: Ultimate Alien mini-site, Ultimate Humungousaur has the ability to grow to 120 ft tall. However, it was confirmed by Dwayne that the website is wrong; he can't grow at all.
 * Ultimate Humungousaur is a Toon Football player and also the third Ultimate Alien in Toon Football (first was Ultimate Swampfire second was Ultimate Cannonbolt).
 * Ultimate Humungousaur is April's Alien of the Month.
 * Ultimate Humungousaur is a featured Exosuit on Exonaut and is level 10 to be bought.