Scruffnut is a Viking mentioned briefly in the game, School of Dragons.
Mentioned by the Twins
|“||We're [Thorston Clan] from a long line of berserker warriors, like you couldn't tell from looking at us! Gruffnut and Scruffnut are Thorston Clan members you haven't met yet.||”|
|— Ruffnut in "School of Dragons|
Scruffnut is a member of House Thorston, meaning he or she is related to Ruffnut and Tuffnut. By extension, Scruffnut would also be related to other Thorston family members such as Gruffnut and Sluffnut (from another game).