Jason Hudson is a CIA agent who is one of the main playable characters in Call of Duty: Black Ops. In addition to be adept at interrogating and tactical assessment, he is also a competent soldier.
Alex Mason refers to Jason Hudson as Mr. Shades because he is usually seen wearing sunglasses. Mason also frequently calls him an Ice Cube, due to his cold and calculating demeanor. This is made particularly apparent when Hudson interrogates Dr. Clarke by breaking a piece of glass and shoving it in Clarke's mouth, and then repeatedly punching Dr. Clarke.
Near the end of Black Ops, Hudson is revealed to be one of the men interrogating Mason.
While he was voiced by Ed Harris in the original Black Ops, he was voiced by Michael Keaton in Black Ops II.