Humungousaur (Classic)

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

Appearance
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 and he has a somewhat humanoid body. When he grows, his tail grows large spikes. Humungousaur wears the Omnitrix/Ultimatrix symbol on his chest.

In Omniverse, Humungousaur wears black briefs with a white waistband and a green sash across his chest containing the Omnitrix symbol. Humungousaur's fingernails are now grey instead of brown. His chin is also slightly bigger. His nose has shifted to his forehead.

Powers and Abilities
Humungousaur possesses incredible strength and a thick layer of armor-like skin which provides vast resistance to injury and damage.

According to Eugene, Humungousaur is strong enough to lift Way Big.

Humungousaur has the power to increase his own body size and mass. He can grow up to 60 ft. His strength increases as he grows.

In Vilgax Attacks and Cosmic Destruction, Humungousaur can do a Shoulder Charge and make shockwaves by slamming the ground.

Humungousaur can generate his stegosauride features (plates and spikes on spine) without changing size.

Humungousaur is durable enough to survive in space for a few minutes.

Humungousaur is quite agile for his size, as he could somersault onto one of the Forever Knight's battle horses in Eye of the Beholder, slide in Special Delivery and being able to evade while jumping in Showdown: Part 2.

Humungousaur has a powerful roar which he used to scare away the sea creatures as seen in Deep.

Weaknesses
Humungousaur's strength is useless against Tyrannopede's sheer weight. He is also very slow and can't fit into small spaces.

Alien Force

 * Humungousaur first appeared in Ben 10 Returns: Part 2:
 * Humungousaur battled some DNAliens and a Highbreed.
 * In All That Glitters:
 * Humungousaur stopped a bridge from collapsing
 * In Max Out:
 * Humungousaur battled some DNAliens.
 * In Pier Pressure:
 * Humungousaur saved Baz-El from an exploding ship.
 * In Paradox:
 * Humungousaur saved Hugo from getting sucked into Paradox's time machine.
 * In Be-Knighted:
 * Humungousaur scared Squire into telling him the truth of the Dragon.
 * In Darkstar Rising:
 * Humungousaur was defeated by Darkstar.
 * Later, Humungousaur defeated Darkstar.
 * In Good Copy, Bad Copy:
 * Negative Humungousaur battled the Forever Knights.
 * Later, Negative Humungousaur battled Swampfire.
 * Humungousaur battled Negative Jetray.
 * In Grounded:
 * Humungousaur saved Kevin from a Highbreed.
 * In Voided:
 * Humungousaur battled D'Void.
 * In Inside Man:
 * Humungousaur battled some DNAliens.
 * In Unearthed:
 * Humungousaur battled Tiny.
 * In War of the Worlds: Part 2:
 * Humungousaur broke himself, Azmuth, Gwen and Kevin out of a prison on Augstaka.
 * In Vengeance of Vilgax: Part 2:
 * Humungousaur was defeated by Vilgax.
 * In Simple:
 * Humungousaur ended the debate of Red Team & Blue Team.
 * In Vreedle, Vreedle
 * Humungousaur showed Judge Domstol the Omnitrix's ability to turn Ben into aliens.
 * In Single-Handed:
 * Humungousaur battled Sunder twice.
 * In If All Else Fails:
 * Humungousaur failed to stop Highbreed Tree Monster.
 * In Ghost Town:
 * Humungousaur battled an alien in a golf course.
 * In Busy Box:
 * Humungousaur battled the Naljian Destructor.
 * In Primus:
 * Azmuth as Humungousaur was defeated by Vilgax.
 * In The Secret of Chromastone:
 * Humungousaur battled Vilgax.
 * In Above and Beyond:
 * Humungousaur pretended to capture Grandpa Max.
 * Later, Humungousaur was thrown into space by the Plumbers' Helpers.
 * In The Final Battle: Part 1:
 * Humungousaur battled Negative Ultimate Humungousaur.
 * In The Final Battle: Part 2:
 * Vilgax's bioids were turned into thousands of Humungousaurs, many were defeated by Negative Ultimate Humungousaur, but remaining ones managed to tire Negative Ultimate Humungousaur out and defeat him.
 * In Alien Swarm:
 * Humungousaur battled a big rock made of Nanochips.

Ultimate Alien

 * Humungousaur returned to Ultimate Alien in Fame:
 * ​Humungousaur scared some reporters away.
 * In Duped,
 * Sensitive Humungousaur battled the Forever Knights.
 * In Video Games,
 * Humungousaur was scanned by Oliver.
 * Later, Humungousaur failed to defeat the Stalker.
 * In Too Hot To Handle,
 * Humungousaur battled Surgeon before going ultimate.
 * In Hero Time,
 * Humungousaur beats Captain Nemesis in a train throwing contest.
 * Later, Humungousaur goes ultimate.
 * In Ultimate Aggregor,
 * Humungousaur failed to stop Aggregor from absorbing the five aliens.
 * In Map of Infinity,
 * Humungousaur was defeated by Ultimate Aggregor.
 * In Deep,
 * Humungousaur scared away some fish aliens while drowning.
 * In Where the Magic Happens,
 * Humungousaur was crystallized by Adwaita, so he goes ultimate.
 * In Perplexahedron,
 * Humungousaur was hit by some lasers on the Perplexahedron.
 * Later, Humungousaur battled some guards.
 * In ...Nor Iron Bars a Cage,
 * Humungousaur accidentally inhaled some alien dream dust and attacked Gwen.
 * In The Enemy of My Enemy,
 * Humungousaur went ultimate.
 * In Absolute Power: Part 1,
 * Humungousaur battled Vulkanus to find out about Ultimate Kevin's location.
 * In Eye of the Beholder,
 * Humungousaur battled the Forever Knights.
 * In The Big Story,
 * Clone Ben as Humungousaur failed to capture Jimmy.
 * In Girl Trouble,
 * Humungousaur battled Antonio before going ultimate.
 * In Revenge of the Swarm,
 * In a dream, a tiny Humungousaur was defeated by a clone of Victor Validus.
 * In The Creature From Beyond,
 * Humungousaur battled Sir Cyrus.
 * In It's Not Easy Being Gwen,
 * Humungousaur battled Animo and his mutant frogs.
 * In Prisoner Number 775 is Missing,
 * Humungousaur battled Prisoner 775.
 * In The Ultimate Sacrifice,
 * Humungousaur battled a red robot before going Ultimate.
 * In Solitary Alignment,
 * Humungousaur is used twice to fight Sir George. The second time he goes ultimate.
 * In Inspector Number 13,
 * Gwen was turned into Humungousaur before she turned into Murk Upchuck.
 * In Couples Retreat,
 * Humungousaur went Ultimate.
 * In Catch a Falling Star,
 * Humungousaur impressed Ms. Nocturne, so Gwen could get additional information from her.
 * In The Eggman Cometh,
 * Humungousaur broke into Dr. Animo's barn.
 * In The Ultimate Enemy: Part 1,
 * Humungousaur battled Vilgax and Gwen.
 * In The Ultimate Enemy: Part 2,
 * Humungousaur appeared in a flashback.

Omniverse

 * In Of Predators And Prey: Part 2,
 * Humungousaur battled Mucilator, who then transformed into Tyrannopede, whom he failed to defeat.
 * In Outbreak,
 * Humungousaur defeated Rook in a training battle.
 * In Blukic And Driba Go To Mr. Smoothy's,
 * Humungousaur battled Trumbipulor.
 * In Malefactor,
 * Humungousaur was dunked in the Ben 10 dunk game.
 * Humungousaur battled Malware and saved a school bus.
 * Humungousaur picked up the wooden bell.
 * In Arrested Development,
 * Humungousaur battled Computron's Minions.
 * In Special Delivery,
 * Humungousaur fought some of his enemies.
 * In Showdown: Part 1,
 * Humungousaur was used to help Pakmar with his barbecue truck. He and Rook were teleported to Galvan Mark II to battle Omnivoracious who transformed into Tyrannopede.
 * In Showdown: Part 2,
 * Humungousaur battled Malware.
 * In The Frogs Of War: Part 1,
 * Humungousaur battled Milleous.
 * In Rules Of Engagement,
 * Humungousaur failed to defeat Princess Looma.

Specials

 * In Ben 10-Generator Rex: Heroes United,
 * Humungousaur came out of the inter-dimensional rift and battled Rex Salazar. He was then used by Alpha.

Appearances
{{scroll box
 * content====Ben 10: Alien Force===
 * Ben 10 Returns: Part 2 (first appearance)
 * All That Glitters
 * Max Out
 * Pier Pressure
 * Paradox
 * Be-Knighted
 * Darkstar Rising (x2)
 * Good Copy, Bad Copy (used twice by Albedo, used once by Ben)
 * Grounded
 * Voided
 * Inside Man
 * Unearthed
 * War of the Worlds: Part 2
 * Vengeance of Vilgax: Part 2
 * Simple
 * Don't Fear the Repo/Vreedle, Vreedle
 * Single-Handed
 * If All Else Fails (selected alien was Way Big)
 * Ghost Town
 * Busy Box
 * Primus (used by Azmuth)
 * The Secret of Chromastone (with a cold, selected alien was Way Big)
 * Above and Beyond
 * The Final Battle: Part 1 (used by Albedo and Ben) (Goes ultimate with Albedo)
 * The Final Battle: Part 2 (used by Bioids)

Ben 10: Ultimate Alien

 * Fame (first re-appearance)
 * Duped
 * Video Games (x2)
 * Too Hot To Handle (Goes ultimate)
 * Hero Time (x2) (Goes ultimate second time)
 * Ultimate Aggregor
 * Map of Infinity
 * Deep
 * Where the Magic Happens (Goes ultimate)
 * Perplexahedron (selected alien was Chromastone)
 * ...Nor Iron Bars a Cage
 * The Enemy of My Enemy (Goes ultimate)
 * Absolute Power: Part 1
 * Eye of the Beholder
 * The Big Story (used by Plant Ben)
 * Girl Trouble (Goes ultimate)
 * Revenge of the Swarm (Dream)
 * The Creature From Beyond
 * It's Not Easy Being Gwen
 * Prisoner Number 775 is Missing
 * Ultimate Sacrifice
 * Solitary Alignment (2x)
 * Inspector Number 13 (by Gwen)
 * Couples Retreat (Goes ultimate)
 * Catch a Falling Star
 * The Eggman Cometh (cameo)
 * The Ultimate Enemy: Part 1
 * The Ultimate Enemy: Part 2 (flashback)

Ben 10: Omniverse

 * Of Predators And Prey: Part 2 (first re-appearance)
 * Outbreak
 * Blukic And Driba Go To Mr. Smoothy's
 * Malefactor (x3)
 * Arrested Development
 * Special Delivery
 * Showdown: Part 1
 * Showdown: Part 2
 * The Frogs Of War: Part 1
 * Rules Of Engagement

Movies

 * '''Ben 10: Alien Swarm

Specials

 * Ben 10-Generator Rex: Heroes United

Video Games

 * Ben 10: Alien Force (Video Game)
 * Ben 10 Alien Force: Vilgax Attacks
 * Ben 10 Alien Force: The Rise of Hex
 * Ben 10 Ultimate Alien: Cosmic Destruction}}

Ben 10: Alien Force

 * 4" Humungousaur (Alien Collection)
 * 4" Humungousaur (Defender)
 * 6" Humungousaur (DNA Alien)
 * Humungousaur (Deluxe)
 * Alien Creation Humungousaur
 * Humungousaur Alien Rock

Ben 10: Omniverse

 * 4" Humungousaur
 * 4" Translucent Humungousaur
 * Humungousaur Vinyl Figure
 * Mini figures Humungousaur & Jetray
 * Humungousaur (DNA Alien Figure)

Trivia

 * Humungousaur is the first alien used on screen by Albedo. He is also the first alien to be ultimatized on-screen (also by Albedo).
 * In Ben 10: Game Creator, Humungousaur's name is misspelled "Humongousaur".
 * Dwayne McDuffie and Derrick J Wyatt have both said Dee Bradley Baker doesn't like doing Humungousaur's voice too much, as it's hard on his throat. This was also stated in the Ben 10: Alien Force video game.
 * In Ben 10: Omniverse, as a running gag through Season 1, Ben has tried and failed to transform into Humungousaur on numerous occasions before finally transforming into him in Of Predators and Prey: Part 2 to fight Zed.
 * In Ben 10: Omniverse, his sash is similar to Monsieur Mallah's, from Teen Titans.