Hotel Valhalla [Magnus Chase Series]

FENRIS WOLF

CATEGORY: Unbelievably regrettable

HOME WORLD: Island of Lyngvi

APPEARANCE: Gray and black fur, powerful build, fangs, and blue eyes.
  Normal size for a typical wolf, but has an extra-intelligent glint in his eyes.

BEST KNOWN FOR:Terrifying savagery. Being restrained by the rope Gleipnir.
  Signaling the start of Ragnarok upon being freed from that rope.