The sentient Ultimate Big Chill looks just like Ultimate Big Chill, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.
Powers and Abilities
Sentient Ultimate Big Chill possesses the same powers as Ultimate Big Chill.
In The Ultimate Sacrifice, the sentient Ultimate Big Chill, 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)