12. 11 - Fafnir
Fafnir was the son of the dwarf king Hreidmar. He was famed as being the strongest of all his brothers, and so his job was to guard his father’s vast treasury. One day Hreidmar captured Odin and Hœnir while they were out hunting, and Loki was sent to gather ransom for them. Loki, being a trickster, decided to pay the ransom with the cursed gold of Andvari, which is said to bring death to all who possess it. When the gold as delivered Fafnir was driven mad by greed, and killed his father before retreating into the forest, where his greed slowly consumed him, and he transformed into a serpent like dragon.
Fafnir has poisonous breath, which he used to kill everything around his lair to scare people away. His blood is supposed to grant the power to understand the language of birds to those who consume it.
How to Kill:
Fafnir was killed by Sigurd, who dig a series of deep trenches and lay in wait inside one for the dragon to pass over on his way to the river for a drink. Sigurd then stabbed him in the left shoulder, mortally wounding him. The dragon stumbled, and just before he died he warned Sigurd not to take the treasure.
So watch out for cursed treasure, my fellow dragon hunters, tamers and enthusiasts, and go armed with a shovel!