Deepfreeze

Deepfreeze (formerly known as Chill Penguin) is the ice expert of the X-Hunters.

Appearance
As his name implies, Chill Penguin was a Reploid based on a king penguin.

As Deepfreeze, he's a thin and short Reploid, colored in pale gray, white, and frost blue, with a sharp, narrow face around his cold but intelligent optics.

Rise of Sigma
Chill Penguin was first seen torturing two humans: a male named Jarek and a female named Sala, into trying to open a Light Capsule. Luckily, X saved Jarek and Sala, while also opening the Light Capsule himself.

Later, Zero sent the 4th Land Unit, from which only Flame Mammoth went Maverick, to stop Chill Penguin in X's stead. However, Chill Penguin killed everyone from the unit but Alia, who was saved by X. X, who just figured out Reploids go Maverick because of a virus, and X was theorizing that the virus was keeping itself to the system buffer, most likely on purpose to torture the Mavericks. X defeats Chill Penguin, and his theory proves correct.

Chill Penguin then returns as Deepfreeze, and signed up for espionage and reconnaissance. He then helped in the mission against Launch Octopus. He also helped Alia stop Sting Chameleon, but he couldn't prevent Dex from being kidnapped by Boomer Kuwanger.