Frost Virgin

Frost Virgin  (フロストヴアージン) are ice-type monsters that serve as sentries for Cocytus’ residence “Snowball Earth,” as well as his bodyguards.

Appearance
A Frost Virgin's skin is said to be bluish-white and their hair black. And wears what looks to be pure white clothes.

Abilities
Frost Virgins are labeled as a level 82 ice-type monsters residing within the 5th Floor of Nazarick. They have the ability to see through invisibility.

Trivia

 * On the 5th of Nazarick, when Mare went to visit it, he encounter them as a bodyguard team while Cocytus wasn't around to defend his domain.