Fenwick Quarrel (not to be confused with the infant fairy Prince Fenwick) is the deceased great uncle of the sorcerous couple Selwyn and Tallulah, and as a ghost amiably haunts their home Quarrel Castle. He first appeared in the episode "Petrified Smurfs" to help Peewit find the spell that Selwyn and Tallulah needed to recite to free the forest as well as the Smurfs from a petrification spell cast by accident. Fenwick says that he has no interest in scaring anyone, which made his first encounter with Peewit problematic at first since he liked to joke about his status of being a ghost. He also appeared in the episode "Smurfing For Ghosts", when he had ghostly relatives coming to visit him for his Ghost Day.