Scooby-Doo the series and the billing, in an attempt to boost "Scooby-Doo"s slipping ratings. The 1979–80 episodes, aired under the new title "Scooby-Doo and Scrappy-Doo" as an independent half-hour show, succeeded in regenerating interest in the show. Lennie Weinrib voiced Scrappy in the 1979–80 episodes, with Don Messick assuming the role thereafter. Marla Frumkin replaced Pat Stevens as the voice of Velma mid-season. As a result of "Scooby-Doo and Scrappy-Doo's" success, the entire show was overhauled in 1980 to focus more upon Scrappy-Doo. At this time, Scooby-Doo started to walk and run anthropomorphically on two feet more often, rather than on
Scooby-Doo its reruns were removed from the ABC lineup the following March, no new "Scooby" series aired on the network for the next two years. Hanna-Barbera reincarnated the original "Scooby-Doo, Where Are You!" cast as elementary school students (a common trope in 1980s children's TV) for a new series titled "A Pup Named Scooby-Doo", which debuted on ABC in 1988. "A Pup Named Scooby-Doo" was an irreverent re-imagining of the series, heavily inspired by the classic cartoons of Tex Avery and Bob Clampett, and eschewed the realistic aesthetic of the original "Scooby" series for a more "Looney Tunes"-like style, including an