The Big, Bad Wolf is a villainous, giant wolf who appears in many fables and fairy tales. In the story of the Three Little Pigs, he displays the ability to exhale large amounts of air. The Wolf is also known to take on disguises such as when he was in sheep's clothing or when he disguised himself as Little Red Riding Hood's Grandmother. He may be based on the giant wolves from Norse mythology: Fenris and Skoll.