The sentient Ultimate Swampfire looks just like Ultimate Swampfire, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.
Powers and Abilities
Sentient Ultimate Swampfire possesses the same powers as Ultimate Swampfire.
In The Ultimate Sacrifice, the sentient Ultimate Swampfire, along with the other Ultimates, convinced Ben to commit suicide so they can be free. Ben tried to, but was stopped by Azmuth and they were freed by him and sent to a planet where they could live in peace.
Ben 10: Ultimate Alien
- The Ultimate Sacrifice (first appearance)