Alvin the Treacherous (a.k.a. Alvin the Poor-but-Honest-Farmer, His Most Mighty Murderousness Alvin the Treacherous, Great High Chieftain of the Outcast Tribe, Thin Prefect of Rome, Alphonse the Talented but Emotional French Chef or Terrific Al) is Hiccup's arch-nemesis. He has been an enemy of Berk in general and Hiccup in particular ever since How to Be a Pirate. His last appearance was How to Fight a Dragon's Fury. Though appearing in the television series, his role is not nearly as prominent as in the books.