An Ice ChuChu in the Hyrule Compendium from Breath of the Wild
Ice ChuChus are very similar to regular ChuChus, except they are light blue, and covered with ice that freezes Link whenever he attacks them directly. Therefore, Link must dispatch them with long range weapons. He can use the Boomerang to stun them. Once Link does this, the Ice ChuChu loses its freezing ability for a short time, and Link can attack it directly. Link can also shoot Ice ChuChus with the Bow or hit them several times with the Whip.
Breath of the Wild
These Chus make a reappearance in Breath of the Wild, having a similar look as the standard chuchus, except coated with a white layer of ice. The Ice ChuChu comes in different sizes with a varying degree of health. The small variants have a health of just 3 HP, the medium-sized enemies have 20 HP, with the large chuchu having 48 HP.
Upon death they will explode, which can temporarily freeze Link. Thus it best to attack the Ice Chuchu from a distance, using ranged weapons such as spears and arrows. If Link attacks an Ice Chuchu with a flame based melee weapon, or a Fire Arrow or Bomb Arrow, they will be defeated instantly. Ice Chuchu will always drop a White Chuchu Jelly as a reward.
They can be found in the frigid regions of Hyrule, such as the Hebra Mountains or Gerudo Highlands. They also appear in more localized peaks, such as Mount Hylia on the Great Plateau, Mount Lanayru, and the Crenel Hills. Occasionally, an Ice Wizzrobe will summon a small Ice Chuchu, and a Blizzrobe can summon a medium-sized Ice Chuchu.