Rick and Morty is an American adult animated science fiction comedy television series created by Justin Roiland and Dan Harmon that premiered on December 2, 2013 on Cartoon Network's Adult Swim programming block and is produced by Williams Street. The series focuses on the misadventures and domestic life of cynical and nihilistic mad scientist Rick Sanchez and his kind-hearted but troubled grandson Morty Smith, who go on absurd sci-fi adventures within various planets, dimensions, and universes using Rick's spaceship and portal gun. In the United States, the series is rated TV-14, although there are episodes rated TV-MA.