FTP, name this fearsome wolf of Norse mythology.
After this figure destroyed Laeding and Dromi, Skirnir was sent on a mission to ensure his capitulation.  Skirnir was successful and returned with an item made of the sound of a cat's footfalls, the beard of a maiden, the roots of a mountain, the dreams of a bear, the breath of a fish, and the spittle of the bird.  It was through the rock Gioll and the chain Gelgia that the aforementioned item, the fetter Gleipnir, was used to bind this figure.  A sibling of Jormungand and Hel, he would bite off Tyr's hand to try and prevent being bound by the Aesir.  FTP, name this fearsome wolf of Norse mythology.
After this figure destroyed Laeding and Dromi, Skirnir was sent on a mission to ensure his capitulation.  
Fenrir or Fenris