Ultimate Big Chill

Ultimate Big Chill is the evolved form of Big Chill in Ben 10: Ultimate Alien. He first appeared in the episode Hit 'Em Where They Live, fighting Vulkanus and his pick-axe army. He is Ben's third Ultimate transformation. He also appears in Escape From Aggregor to battle an innocent Galapagus.

Appearance
Ironically, Ultimate Big Chill resembles more of a fire type alien, while regular Big Chill resembles more of an ice type alien. After evolution, Ultimate Big Chill changes his usual blue color to red. His wings and antennae now have an orange flame design. He also has a mask-like flame tuft on his face. He can still make his wings and antennae fold into a cloak, which looks no different from the old cloak, except for being red. His voice is now more gravelly, having a deeper tone behind it.

Abilities
He can still become intangible, manipulate ice, and fly. Instead of breathing ice, he can create "ice flames" (actually a heat-draining plasma beam), which he describes as "ice so cold it burns". Dwayne McDuffie described them as flames that consume the heat of whatever they touch, and use that energy to burn. He can breathe flames or shoot them from his hands, and when they hit something, it turns into blue ice. He can also freeze things faster than Big Chill. His transparent invisible/intangible form is now red instead of blue. He is also much faster while flying and phasing through objects.

Trivia

 * Ultimate Big Chill is the first Ultimate Alien Ben has used more than once, the second being Ultimate Humungousaur.
 * Ultimate Big Chill is the third Ultimate alien ben has turn into in general.

Translation

 * Portuguese: Friagem Supremo/ Chill Supreme

Normal Form

 * Big Chill