Amarok

Amarok (UHM-uh-rohk; Inuit Amarok "wolf") is a Wesen described as a human-like creature covered by fur with breath that could chill its victims to death.

As Hank and Nick looked through some Grimm Diaries in the trailer for any possible information on a Wesen that could freeze its victims, Hank came across an excerpt about the Amarok.

Trivia

 * In Inuit mythology, the term Amarok is actually exclusively reserved for a legendary, gigantic gray wolf that stalks and kills those who are foolish enough to hunt alone at night.