Scooby-Doo and Scrappy-Doo (1979 TV series) threatening cancellation for the show, whose ratings were in decline. ABC was going to choose between two shows-Scooby-Doo or an unnamed pilot from Ruby Spears Enterprises. Therefore, for its 1979–1980 season, "Scooby-Doo" was given a major overhaul, adding the character of Scooby's nephew Scrappy-Doo, voiced by Lennie Weinrib, and changing the name of the show to "Scooby-Doo and Scrappy-Doo". Although still present in these episodes, the characters of Fred, Daphne, and Velma became less essential to the plot and Shaggy, Scooby and Scrappy were the main focus. Marla Frumkin took over Pat Stevens' role as Velma Dinkley towards the end
The New Scooby-Doo Movies "Scooby-Doo, Where Are You!" aired on CBS for the next two years. No new "Scooby-Doo" cartoons would be produced until the show defected to ABC in September 1976 on the highly publicized "The Scooby-Doo/Dynomutt Hour". When the various "Scooby-Doo" series entered syndication in 1980, each "New Movies" episode was halved and run as two half-hour parts. The USA Network "Cartoon Express" began running the "New Movies" in their original format beginning in September 1990; they were rerun on Sunday mornings until August 1992. In 1994, "The New Scooby-Doo Movies" began appearing on three Turner Broadcasting networks: TNT, Cartoon Network and