Ultimate Humungousaur

Ultimate Humungousaur is Ben's ultimate version of Humungousaur. He first appears in Ben 10 Alien Force where it is first used by Albedo to fight Ben. He will appear in Ultimate Alien as one of Ben's aliens. He is voiced by Dee Bradley Baker.

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Ultimate Humungousaur is an evolved Vaxasaurian from the planet Terradino. He is bigger than his normal version and green skin. He has gray horns on his head, arms, chest, back, and has a blue mace on his tail. Ultimate Humungousaur also has some helmet on his head with blue color. He can transmute his hands and fingers into missile-like weapons. Dwayne McDuffie revealed on his website that the missiles were actually pieces of energized bone. He is strong enough to take out Humungousaur with only a few hits. This form was first used by Albedo in the Alien Force series finale The Final Battle: Part 1. 

Abilities
He can "transmutate" his hands into flat circles, and the four bone caps on his knuckles become small ports, firing pellets of bone, packed with explosive material, to simulate missile launchers. Another new feature is that he has a spiked shell on his back, giving him a similar appearance to the Nintendo villain, Bowser, or an anklyosaur, an armored, quadropedal dinosaur species that has a spiked shell and a hammer-like growth on it's tail. Ultimate Humongosaur has a shell on his back with spikes on the edges. Like Humongousaur he can expand, but he can expand to 120 ft. He has super strength and the ability to turn his hands into missiles.

Trivia

 * Showcard.jpg normal form he is also taller than Humungosaur.


 * Humungousaur is the first evolved alien seen in the series.
 * In the Cartoon Network online game TKO, Ultimate Humongousaur is a playable character. Even though, he is locked, and the only way to unlock Ultimate Humongousaur is to win three instant matches while logged in.
 * Ultimate Humungousaur is tied as Ben's strongest alien.(The other being Ultimate Spidermonkey)

Hero Form

 * Humongousaur