"These quick-witted, lizard-like monsters can be found all over Hyrule. The balls of ice they spit make them particularly troublesome, but exposure to fire will kill them instantly. Their homes are mainly on snowy mountains."
Ice-Breath Lizalfos are enemies which appear in Breath of the Wild. Ice-Breath Lizalfos have the unique ability of shooting out balls of ice from their mouth, and if these balls come into contact with Link, they will freeze him, leaving him vulnerable to other attacks. Link can avoid taking damage from ice attacks if he has acquired the Snowquill Set and upgraded it to Level II, giving it the Unfreezable set bonus.
Ice Lizalfos will often hide themselves within the snow, camouflaging themselves with the white environment, making it hard for Link to see them. Due to their ice-nature, they are very vulnerable to fire based attacks. Link can defeat one of these enemies instantly with a single short from any fire-based weapon. This includes Fire Arrows, Bomb Arrows, any fire elemental melee weapon, and even a lit Torch
These Lizalfos are found exclusively in cold regions within Hyrule, notably at the Gerudo Highlands, the Hebra region, and near Mount Lanayru in Hateno. While these Lizalfos can wield a variety of weapons, they most commonly are found with Lizal Boomerangs or a Forked Lizal Spear.
Hyrule Compendium entry of the Ice-Breath Lizalfos.