Blizzard demon

Useful Info

Blizzard demons are cold- and air-themed tier-2 demons. Although less dangerous than hellions or cacodemons, they can still deal significant cold and electricity damage to characters without the proper resistances. They can be found in hard Ice caves, the Abyss, and Pandemonium (particularly in Lom Lobon's domain).

Blizzard demons aren't too terrifying on their own - by the time they start appearing naturally, you'll likely have the proper resistances and high enough AC to mitigate the damage output of their spells. Even so, allowing them to hang out around in the background while you deal with other opponents is dangerous; repeated Sleetstrikes can rack up heavy damage over time. Try to keep them out of your line of sight if you can't deal with them immediately, particularly if you're at risk of getting tormented as well.

Prior to 0.34 blizzard demons had Airstrike and Bolt of Cold spells instead of Sleetstrike and Deflect Missiles. Additionally they had monster version of Freezing Cloud which was changed to separate Freezing Gust.
Prior to 0.33 blizzard demons were not insubstantial.
Prior to 0.28, blizzard demons could be found in Cocytus.
Prior to 0.14, blizzard demons were speed 11.
Blizzard demons were added in 0.10, replacing Blue Deaths.