Scooby-Doo is the longest-running United States animated franchise produced for Saturday morning television in several different versions from 1969 to the present. Versions of the show feature a talking Great Dane named Scooby-Doo and four teenagers: Fred Jones, Daphne Blake, Velma Dinkley, and Shaggy Rogers.
These characters drive around the world in a van called the "Mystery Machine", and solve mysteries typically involving tales of ghosts and other supernatural forces. At the end of each episode, the supernatural forces turn out to have a rational explanation (usually a criminal of some sort trying to scare people away so that they can commit crimes). Later versions of the show featured different variations on the supernatural theme of the show, and include additional characters, such as a warlock named Vincent Van Ghoul, a kid named Flim-Flam, Scooby's cousin Scooby-Dum, and nephew Scrappy-Doo, in addition to or instead of some of the wanted characters.