Sentient Ultimate Humungousaur

The Sentient Ultimate Humungousaur was trapped inside the Ultimatrix as Ultimate Humungousaur until he was freed by Azmuth and Ben.

Appearance
The sentient Ultimate Humungousaur looks just like Ultimate Humungousaur, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.

Powers and Abilities
The sentient Ultimate Humungousaur possesses the same powers as Ultimate Humungousaur.

Ultimate Alien
In The Ultimate Sacrifice, the sentient Ultimate Humungousaur, along with the other Ultimates (except Ultimate Wildmutt and Ultimate Way Big), convinced Ben to sacrifice himself so they could be free from the Ultimatrix. Ben tried to, but the Ultimatrix spared his life and freed the ultimates for his heroic actions. Azmuth sent them to a planet where they could live in peace.

Ben 10: Ultimate Alien

 * The Ultimate Sacrifice (first appearance)

Trivia

 * Sentient Ultimate Humungousaur was the first Ultimate to rebel against Ben.
 * Sentient Ultimate Humungousaur appears to be the leader of the six Sentient Ultimates.