Aszurass was a huge adder snake that was feared by the Flitchaye. The weasels caught it and liked to sacrifice unknowing travelers to it (while eating candied chestnuts), so they could appease it. It had glistening light green scales and lots of shiny white teeth. Alderjack, Treescamp and Horlington Bradshaw Vittlescoff III were going to be fed to it, but they were saved by Slimbrook and Goodwife Nutbrush. After Alderjack beheaded it, they were pursued by Mangarooka and the rest of the Flitchaye.
Technically, His name is "Blue ###", suggesting he was probably a bluish color.