King Bull Sparra was the Sparra king who inherited the Sword of Martin from the King Bloodfeather. He was clever but insane at the same time. King Bull was the brother of Dunwing and uncle of Warbeak. While hunting for worms in Mossflower Woods with his brother-in-law - Dunwing's husband - Greytail, he was attacked by Asmodeus and dropped the sword. Asmodeus then took possession of the sword, to which King Bull Sparra ordered Greytail to retrieve the sword for his king. Greytail made an attempt to get the sword from Asmodeus but was bitten by the adder. He miraculously did not die instantly, and upon returning to the Sparra court, Greytail told Dunwing what really happened while King Bull Sparra told everyone else that Greytail's injuries were due to a starling fight and pretended that he