Mischievous Snowman are encountered in the Underworld during the In Grenth's Defense quest during Wintersday. They have approximately 200 Health. Despite their appearance, snowmen are considered fleshy creatures.
These are some of the deadliest snowmen for casters due to Hidden Rock. Pay attention to the Snowman's skill warmup bar; knowing which snowball is enhanced with Hidden Rock allows you to dodge appropriately .