Crystal

Crystal is an ice sprite introduced in Welcome to Monster High. She used to live trapped in a giant block of ice, but luckly was rescued by the Ghoul Squad.

Personality
Not much is known about Woolee but she appears to be friendly to the other students at Monster High. She can generate ice and turn thing in ice.

Appearance
She is a small ice sprite, and her body is made of blue ice.

Friends
She is friends with Woolee since they weren't students yet. They usually are seen hanging out around the school.