General Information
Species Vaxasaurian
Home World Terradino
Body Dinosaur-Like
Ultimate Form Ultimate Humungousaur
Alternate Counterparts Dino-Mighty
Powers and Abilities
Abilities Super Strength
Enhanced Durability
Enhanced Aglity
Powerful Roar
Voice Actor John DiMaggio
First Appearance Ben 10 Returns: Part 1

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


Humungousaur is a big humanoid dinosaur alien with brown and beige skin and a tail. He wears a green sash with the Omnitrix on it and black white rimmed briefs. When he grows he gains Stegosaur like plates on his back and spikes on his tail as well as more armor plated skin.

Powers and Abilities

  • Humungousaur has enhanced strength and durable skin.
  • He can grow up to 60 feet.
  • By slamming the ground, he can make shockwaves.
  • He can survive in space for a few minutes.
  • Humungousaur has a very loud roar.
  • He cannot be frozen. 


  • Tyrannopede is just too heavy for Humungousaur to lift.
  • He is also slow and can't fit in small spaces.
  • Humungousaur is weak against electricity.