In Norse Mythology, Fenrir was a monstrous wolf. Son of the Norse God Loki and brother to Hel. Unlike Hel, Fenrir was raised by Odin himself. But as things would come to be, he was foretold to kill Odin during the events of Ragnarök.
A major inspiration for this doodle is the Fenrir Wolf character from the PC game Age of Mythology, and more recently from the TV show Vikings.