Toothless is the name of Hiccup Horrendous Haddock III's dragon in the How to Train Your Dragon franchise and the deuteragonist. Unlike his book counterpart, Toothless is a Night Fury, arguably the rarest and most intelligent of dragon species. He is the quintessential dragon in the series, and remains unrivaled in intelligence. He is presumed to be the only living Night Fury, at least on Berk and the surrounding Isles.