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
Scooby-Doo 1994). In 1993, "A Pup Named Scooby-Doo", having just recently ended its network run on ABC, began reruns on the Cartoon Network. With Turner Broadcasting purchasing Hanna-Barbera in 1991, in 1994 the "Scooby-Doo" franchise became exclusive to the Turner networks: Cartoon Network, TBS Superstation, and TNT. Canadian network Teletoon began airing "Scooby-Doo, Where Are You!" in 1997, with the other "Scooby" series soon following. When TBS and TNT ended their broadcasts of H-B cartoons in 1998, "Scooby-Doo" became the exclusive property of both Cartoon Network and sister station Boomerang. With "Scooby-Doo's" restored popularity in reruns on Cartoon Network, Warner Bros.