The cartoon Scooby-Doo is an American animated series for television created in 1969 by Hanna-Barbera Productions.
There is 5 characters into the Mystery Machine team, Scooby Doo, Shaggy, Daphne Freddie and Velma. They drive a van called "The Mystery Machine" and they solve mysteries typically involving tales of ghosts and other supernatural forces (but at the end, the supernatural forces turn out to have a rational explanation).