Ultimate Humungousaur is a playable alien.
Ultimate Humungousaur has tough, green skin and nearly impenetrable armor plating similar to an exoskeleton. His muscle fiber has increased greatly, making him exponentially stronger than before. He is strong enough to easily overpower one Humungousaur, but can't when there are too many. As a result of millions of simulated battles over a millennium, his genetic DNA now allows him to form his hands into bio-gatling guns that shoot kinetically unstable bone fragments as missiles. He is also one of Ben's strongest alien forms as in The Enemy Of My Enemy (despite losing in the end) he was able to fight on an evening footing with Ultimate Kevin (actually having the upper hand in the opening moments of their fight)