Name: The Fenris Wolf
Aliases: Fenrir, Fenrisúlfr, Hróðvitnir
Age: Ageless
From: Asgard, land of the gods
Descrption: Legends describe him as a huge and vicious wolf. No eye-witnesses have claimed to have seen him in decades.
Notes: The Norse myths say that Fenrir is the second monstrous child of Loki. Most worryingly, it is foretold that he will re-appear in time for Ragnarök - the end of the world!
Whereabouts: UNKNOWN

This photo was taken on a mobile phone recently in the Irish countryside. It appears to be a very large wolf crossing a road. Could it be Fenrir?
For more about the legend of Fenrir, see here.