Vaxasaurians are one of the species living on Terradino. There is always a war between some creatures on Terradino and Vaxasaurians are regarded to stop those wars. Vaxasaurians have supreme strength, the power to grow to five times their regular size (which enhances their strength even more), and strong enough to survive in space for minutes
Vaxasaurians have amazing strength.They also have the power to grow up to 60 ft.
In evolution Vaxasurians become more Ankylosaurus-like than Stegosaurus-like,they skin changes to the color green, gains gray horns on his head, arms, chest, and back. Their tail turns into a spiked mace. They become stronger and now bigger to than their normal height. They also gain the ability to transmutate their hands and fingers into missile-like weapons to fire explosive material from their body. Their finger nails are also replaced with claws..
- Humungousaur (The Omnitrix's DNA sample of a Vaxasaurian)
- Ultimate Humungousaur (Humungousaur's ultimate form, only in the Ultimatrix)
- Ultimate Kevin (part Vaxasaurian)(part evolved Vaxsurian)
- Infinite Humungousaur
- Spikysaur (Dimension 23 version of Humungousaur in Ben 23)
- Enormousaur (Dimension 99 counterpart of Humungousaur in Ben 99)
- Hulker - Back in Action: Alien Universe
- Tom - Finn 10: Fusion
- Hugh Mung Osaur (Appeared in Monkeying Around)
- Multiple Vaxasaurian Plumbers in BTFF Fall.
- Roary(1/2 Vaxasaurian)
- Doomtron 1/6 Mutant Hybrid Cyborg
- Tremendousaur (the Atomnitrix's DNA sample of a Vaxasaurian)
- Dino-Might (the Atomnitrix's DNA sample of a Vaxasaurian)
- Tetramendousaur (the Biatomnitrix's DNA samples of 1/2 Vaxasaurian and 1/2 Tetramand)
- Tremendamuckousaur (the Biatomnitrix's DNA samples of 1/2 Vaxasaurian and 1/2 Polymorph)