OTTAR

Ottar or Ótr was a dwarf son of King Hreidmar and brother of Fafnir and Regin. According to the Prose Edda, Ottarr had the ability to change to whatever shape he wanted, but he preferred to spend a lot of time transformed into an otter, hunting and feeding on fish. Ottarr was accidentally killed by Loki, who wanted the beautiful coat of his animal form