Humungousaur

Humungousaur, or "humongous dinosaur," is 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 skin is hard, brown and a sort of beige color and he has a somewhat humanoid body. When he grows, his tail gains big spikes. Humungousaur wears the Omnitrix / Ultimatrix symbol on his chest.

Appearences :

 * The Elemental Lords
 * Attack of Eunice

Appearences :

 * TBA

Abilities :
He has great strength and a thick layer of skin which provides vast resistance to injury. Humungousaur also has the power to increase his own body size and mass, using dimensional displacement (according to Dwayne McDuffie) growing up to sixty-one feet in height (making him Ben's third largest alien right after Waybig and Ultimate Humongousaur). His strength increases as he grows, and his dinosaur features become more pronounced, growing stegosaur-like plates on his back, a crest from his forehead, and spikes on his tail. Recently Humongousaur has proven to be durable enough to survive in space for at least a few minutes.

Super Form :
Super Humungousaur has metal plates covering his body, and he can create a loud screeching sound from his mouth. He is much larger. His metal scales protect him form weaponry, lasers, and some missiles.

Ben 10: Star Command Files :

 * The Revenge of Vilgax (Part 2; goes Ultimate)
 * To Z or not to Z (goes Ultimate)
 * Return to the Past
 * Crisis on Terradino (twice; goes Ultimate)
 * Dr. Animo and the Return of the Mutant Ray (fused with Brainstorm)
 * Planet of the Dinosaurs
 * Negative Revenge
 * Split Personality
 * The Power of Heroes (used by Zac)

Ben 10: Protector of the Omniverse
He looks like his OV appearance, but his nostrills are below his eyes, his band is now aligned differently, allowing the Infinimatrix symbol to be on his chest, and he has no underwear. A simulation of him appears in The Trouble With Doubles.He makes his first reappearance in Fusing Some Enemy Butt to fight the mutant frog.He is used by BTUP Ben in Ben 10: Heroes United.He is used by present Ben in Ben Times Five.He is used by Ben in Unexpected.

Ben 10: Hero of Heroes
He looks like his AF/UA self.He appears in Good Vreedle, Bad Vreedle to fight Ma Vreedle.

Ben 10: Omnitrix Unlimited
He has his OV appearance. He first appears in It's...Echo Echo Time! where he defeats Mucilator.

Zac 10 Master of the Ultimatrix :
The Rise

The Ultimate Fight (goes ultimate)

The Master (2x, used by Ben one time)

The Power of Heroes (used by Zac)

Ben 10 Ultimate Universe
Humungousaur looks like his AF/UA form but with green and black shorts and fingerless gloves. Humungousaur was first used in Off to Collage to defeat Sevenseven and Sixsix.

Will 10 X :
Humongousaur is used in Will 10 X but it's only his X form.

Tommy 12 :
Humongousaur appears when Dr. Thesame fired a laser at Bittoke.

Ben 10 Aliens Unleashed

 * Nightmares Part 1
 * On the run

Ben 10: Peace in dimensions :

 * Gwen 10 Returns Part 1
 * Gwen 10 Returns Part 2
 * IT'S YOUR FAULT ALBEDO!
 * Knight of the living rightmare
 * Khyber's preview
 * 10.10.11
 * Enter the Dagons Part 1
 * Enter the Dagons Part 2

Ben 10: Omniverse Good VS Evil
Season 1 Season 2
 * Debut of Khyber's Pet: Part 2 (First re-appearance)
 * Prey

Chaturn 10: Fan Force

 * Origins of Chaturn, Part 2 (Used by Solo)

John Smith 10
Humungousaur is first used by Rob Lucci to battle John. He was also used offscreen before the events of Be-Knighted (John Smith 10).

Appearances:

 * Ultimate Evolution (first appearance) (used by Lucci) (goes Ultimate)
 * Hero Time (John Smith 10) (first appearance by John)
 * The Visitor (John Smith 10)
 * The Creature From Beyond (John Smith 10)
 * Knight's Temple
 * Primus Again (goes Ultimate)
 * Catch a Falling Star (John Smith 10)
 * It's Not Easy Being Gwen (John Smith 10)
 * John 10,000 (episode) (cameo)
 * A Knight to Remember (John Smith 10)
 * Solitary Alignment (John Smith 10)
 * The Ultimate Enemy Part 3 (John Smith 10) (by John and Ultimate John)
 * John Smith 10 Christmas Special

Galactic Battle:

 * En Garde (first re-appearance)
 * Map of Infinity (John Smith 10)
 * Forge of Creation (John Smith 10)
 * Duel of the Fates
 * The Secret of Chromastone (John Smith 10)
 * The Clone Wars (John Smith 10)
 * Prisoner (John Smith 10) (by clone 1)
 * Reunion (John Smith 10)
 * Ultimate John (episode)

Distant Worlds

 * Fight (first re-appearance) (used by Ultimate John clone 3)
 * Leaf 12 (used by Ultimate John)
 * Incarcecon Breakout, Part 1 (used by Ahmad & Ultimate John)
 * Incarcecon Breakout, Part 2 (used by Ultimate John & Ahmad)

Richard's A Christmas Carol
In Richard's A Christmas Carol, he plays the part of Scrooge's underpayed, overworked employee, Bob Kratchit. He gets Christmas Day off, Scrooge calling it "a poor excuse of picking out of a man's pocket every twenty-fifth of December."

Back in Action: Alien Universe

 * Infernosphere 
 * Magikfest 
 * No Strings Attached (Negative)
 * Hit and Miss (x2)
 * Ten Plus Twenty (accidental transformation; selected was Crashhopper)
 * Missing Link 
 * Revelation (present Ben and Future Ben; Future Ben: offscreen transformation)
 * Threat or Menace (x2; first time: accidental transformation: selected by Ron Reymann)
 * Why Am I Here? (Negative, cameo)