The Winter's Howl is a wonder weapon first appearing in the Call of Duty: Black Ops map "Five" and the Black Ops version of Verruckt. The Winter's Howl fires ice blasts that slow down and freeze zombies caught in the blast. The damage of the weapon is not infinite, and the further into the rounds the player goes, the more shots it will take to freeze the zombies to death. It holds 6 shots per magazine, and holds 24 shots in reserve. In "Five" and Verruckt the Winter's Howl can be acquired from the mystery box for 950 points.
The Winter's Howl is a prototype weapon, built by American scientists, seemingly reverse engineered from Group 935 and/or Ascension Group technology. An unusuable Winter's Howl can be found in the labs of "Five", suggesting it was developed at the Pentagon.
When placed in the Pack-a-punch machine, the Winter's Howl is upgraded to the Winter's Fury. The magazine size is upgraded from 6 to 9, and up to 36 shots are held in reserve. The damage is increased by roughly 41%, and all other stats remain the same.
- Strangely, the Winter's Howl appears on the First Strike Ascension poster alongside the Thundergun, Ray Gun, and Wunderwaffe DG-2, despite not appearing in Ascension.
- An early design of the weapon can be found in the game files, showing a weapon with a much longer barrel, more akin to a sniper rifle or a light machine gun.