Scooby-Doo four like a normal dog as he did previously. Fred, Daphne, and Velma were dropped from the series, and the new "Scooby-Doo and Scrappy-Doo" format now consisted of three seven-minute comedic adventures starring Scooby, Scrappy, and Shaggy instead of one half-hour mystery. Most of the supernatural villains in the seven-minute "Scooby and Scrappy" cartoons, who in previous "Scooby" series had been revealed to be human criminals in costume, were now real within the context of the series. This version of "Scooby-Doo and Scrappy-Doo" first aired from 1980 to 1982 as part of "The Richie Rich/Scooby-Doo Show", an hour-long program also
Scooby-Doo the Night" on a flight to one of the development meetings, and decided to rename the dog "Scooby-Doo" and re-rechristen the show "Scooby-Doo, Where Are You!" The revised show was re-presented to CBS executives, who approved it for production. The first episode of "Scooby-Doo, Where Are You!" "What a Night for a Knight" debuted on the CBS network Saturday, September 13, 1969. The original voice cast featured veteran voice actor Don Messick as Scooby-Doo, radio DJ Casey Kasem (later host of radio's syndicated "American Top 40") as Shaggy, actor Frank Welker (later a veteran voice actor in his own right)