Villains from the Redwall book series by Brian Jacques.
Given the very black-and-white nature of the Redwall universe, most villains in Redwall are portrayed very seriously and most, if not all, have no redeeming qualities. Most of them belong in the 'vermin' category. Species that are considered vermin in the Redwall universe are antropomorphic rats, weasels, stoats, ferrets, foxes, wildcats, pine martens, sables, wolverines, polecats, lizards, snakes, toads, newts, ravens, crows, rooks, magpies and jackdaws. Shrews, squirrels and voles, while usually considered good creatures, sometimes appear as minor antagonists as well.