Brainfreeze is a Frostation from Europia (Jupiter's moon). His Omnitrix is on his belt.
Simillar to Brainstorm, Brainfreeze can open up his head and shoot an ice laser from his brain. Brainfreeze is also extremely intellegent.
(Brainfreeze was first used to battle Haf)
(Brainfreeze snapped out of being evil, and made it snow)
(Brainfreeze battled Kopykat)
(Brainfreeze battled Flameburst)