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 (character) a famous (and much parodied) speech impediment. His catchphrase is "Scooby-Dooby-Doo!" Writers Joe Ruby and Ken Spears created the original "Scooby-Doo" series, "Scooby-Doo, Where are You!", for Hanna-Barbera for CBS's 1969–70 Saturday morning cartoon schedule. Originally titled "Mysteries Five", the dog who later became Scooby was originally more of a sidekick character – a bongo-playing dog named "Too Much" whose breed varied between Great Dane and sheepdog between treatments. By the time the series was pitched to the network as "Who's S-S-Scared?" in early 1969, Too Much was solidified as a cowardly Great Dane. Both the dog and the series