Peewit as a werewolf
Werewolf and Weresmurf both redirect here.
Greedy as a weresmurf
Brainy as a weresmurf
Lycanthropy is the mythological or folkloric condition of a human with the ability to shapeshift into a wolf or a therianthropic hybrid wolf-like creature called a werewolf, either purposely or after being placed under a curse or affliction (e.g. via a bite or scratch from another werewolf). Early sources for belief in lycanthropy are Petronius and Gervase of Tilbury.
In mainstream Smurfs media, lycanthropy appears at least twice in the cartoon show. In the episode "I Was A Brainy Weresmurf", Brainy wound up turning into a weresmurf after receiving a scratch from an unpleasant-smelling flower. After some research in his lab, Papa Smurf discovers that "a pure-hearted Smurf" can become a weresmurf if the sap of a Moon flower enters his body. The cure turned out to be a collar made of silver root and garlic, which had to be given to Brainy before midnight of the following day. If not done, he would have been cursed to become a weresmurf at each full moon for the rest of his life. Thankfully, he was saved by his fellow Smurfs and managed to make friends with the forest wolf family through the experience by the end of the episode.
In "Wolf In Peewit's Clothing", Radna used wolf gravy to transform Peewit into a werewolf so that he could capture a few Smurfs to restore Radna's magical abilities. Greedy in the same episode was changed into a weresmurf by eating the same gravy. Both were able to be cured by the ingestion of garlic.
In "Scary Smurfs", many monsters were seen inhabiting a cursed forest in Transylvania, including werewolves like Eyegor.