Chill Penguin,   is a Reploid designed after a king penguin. Formerly a Maverick Hunter, he joins Sigma's rebellion and becomes a Maverick lieutenant.Chill Penguin is a loud-mouthed individual who is always searching for excitement. He is rowdy and belligerent despite his small stature. He makes for a keen soldier and was an important part of Sigma's rebellion.

Chill Penguin seems to have trouble getting along with his comrades. There was a strong animosity between him and Flame Mammoth 

