The following Hanna-Barbera shows and characters are known or believed to have official accounts on Facebook, Twitter and other online social networks: * Captain Caveman * Dick Dastardly (Facebook classifies him as an athlete rather than a fictional character) * The Flintstones * Grape Ape * The Jetsons * Josie and the Pussycats * The New Tom and Jerry Show * Peter Potamus * Quick Draw McGraw * Scooby-Doo * Yogi Bear