Miss Piggy wound up on top of the "New York Times" Bestseller List. Miss Piggy's personality and voice were seen and heard in other female characters performed by Frank Oz before the character's debut. For instance, a "Sesame Street" Muppet skit from 1971 featured Snow White performed by Frank Oz and acting (as well as sounding) like Miss Piggy. Another sound-alike came from a contestant in a Guy Smiley sketch called "The Mystery Mix-Up Game". In "The Muppet Show" episode 106, Piggy is referred to by the full name "Piggy Lee," and in episode 116, Piggy tells guest star Avery Schreiber that
Rowlf the Dog appeared only in one filmed segment and was never a part of the show's regular cast. In 1976, Rowlf joined the recurring cast of "The Muppet Show" as the show's pianist. Rowlf also played Dr. Bob, the wisecracking doctor in the recurring medical drama parody skit "Veterinarian's Hospital", alongside nurses Janice and Miss Piggy. Though considered one of the main characters, he rarely interacted with any of the backstage plots involving the show's weekly guest stars. Rowlf achieved movie stardom with his appearance in "The Muppet Movie" (1979). The film depicts Rowlf's origin as a musician at a piano bar,