The plot of Scooby-Doo involves solving mysteries that at first appear to be supernatural or based in sci fi.
Scooby-Doo . This Saturday-morning cartoon series featured four teenagers -- Fred Jones , Daphne Blake , Velma Dinkley , and Norville `` Shaggy '' Rogers -- and their talking brown Great Dane named Scooby-Doo , who solve mysteries involving supposedly supernatural creatures through a series of antics and missteps . Some versions of Scooby-Doo feature different variations on the show 's supernatural theme , and include characters such as Scooby 's cousin Scooby-Dum and nephew Scrappy-Doo in addition to or instead of some of the original characters . Syfy Universal is a family of television stations in countries around the world broadcasting science fiction , fantasy , horror , supernatural and paranormal programming , and owned or licensed by entertainment conglomerate NBCUniversal , a subsidiary of Comcast .