The Fafnir Dragon is from the Norse Volsunga Saga. Fafnir was originally a dwarf but transforms himself into a dragon and hides in a cave, protecting his stolen gold. Fafnir was driven to steal the gold by a magic ring, gifted by Loki, the Norse God of mischief.
I am drawn to this myth as it has close links to the Lord of the Rings, and Chronicles of Narnia.
Fafnir finally met his end at the hand of Sigurd, who cooked its heart and the blood gave him the power of understanding every language, including animals and birds.
Richard Wagner, a composer, used this myth as inspiration for his epic ‘Ring Cycle’ of operas.