Big Chill is the Ultimatrix's DNA sample of a Necrofriggian from Khylmys.


Big Chill is a humanoid, moth-like alien whose four wings and antenna can fold up into a hooded robe (much akin to a poncho), giving him the appearance of a phantom.

Big Chill has a black body with cyan patches on his arms, shoulders, legs, the back of his wings, and the back of his neck that resemble ice chunks. Each patch has thick blue outlining except for the ones on his wings, which are outlined in black. There is also a black line that runs on the edge of the outer margin on the back of each wing. On his torso are three plates: one resembling the chest, a shorter plate under the chest, and one resembling the stomach. On his face are blue cheeks and underjaw, a mouth that always shows bluish-white teeth, and large green eyes with dark green spots. The top of his head also sports a blue Y-shaped marking that extends over his scalp. He has three pointed fingers and a thumb on each hand, and two toes on each foot and a third toe-like extension on his ankles. Big Chill wears the Ultimatrix on his chest.

Powers and Abilities

Big Chill is able to fly. Whilst flying he has enhanced speed and agility. He can breathe ice that freezes anything on contact. He can turn both invisible and intangible.


There are some materials Big Chill cannot phase through. Some robots and machines can see Big Chill while he is invisible.


  • Big Chill first appeared in And Then There Was A Hero, where he saved Amelia from Sixsix.
  • In Just What The Doctor Ordered, Big Chill chased Dr Animo before going ultimate.
  • In Steam Trouble, Big Chill was used off-screen to get off the roof.
  • In Atomix, Big Chill saved a skydiver and was interviewed by Will Harangue.
  • In An Alien Christmas, Big Chill battled Santa Claws before going ultimate. He later appeared while reverting back into Ben. He is later used to make it snow.


Season 1



  • Big Chill was the first alien Kylebros128 chose to be in his original line-up.
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